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Will global warming bring a change in the winds? Dust from the deep sea provides a clue

January 14, 2021 by Zakia

The westerlies – or westerly winds – play an important role in weather and climate both locally and on a global scale, by influencing precipitation patterns, impacting ocean circulation and steering tropical cyclones. So, finding a way to assess how they will change as the climate warms is crucial.

Typically, the westerlies blow from west to east across the planet’s middle latitudes. But scientists have noticed that over the last several decades, these winds are changing, migrating poleward. Research suggests this is because of climate change.

But, scientists have been debating whether the poleward movement of the westerlies will continue as temperatures and atmospheric carbon dioxide (CO2) increase further under future warming scenarios. It’s been difficult to resolve this scientific question because our knowledge of the westerlies in past warm climates has until now been limited. [Read more…] about Will global warming bring a change in the winds? Dust from the deep sea provides a clue

Filed Under: Environment, News Tagged With: change, climate, continue, dust, earth, future, global, patterns, precipitation, warming, westerlies, winckler, winds

A blazar in the early universe

December 31, 2020 by Zakia

The supersharp radio “vision” of the National Science Foundation’s Very Long Baseline Array (VLBA) has revealed previously unseen details in a jet of material ejected at three-quarters the speed of light from the core of a galaxy some 12.8 billion light-years from Earth.

The galaxy, dubbed PSO J0309+27, is a blazar, with its jet pointed toward Earth, and is the brightest radio-emitting blazar yet seen at such a distance. It also is the second-brightest X-ray emitting blazar at such a distance.

In this image, the brightest radio emission comes from the galaxy’s core, at bottom right. The jet is propelled by the gravitational energy of a supermassive black hole at the core, and moves outward, toward the upper left. The jet seen here extends some 1,600 light-years, and shows structure within it.

At this distance, PSO J0309+27 is seen as it was when the universe was less than a billion years old, or just over 7 percent of its current age.

An international team of astronomers led by Cristiana Spingola of the University of Bologna in Italy, observed the galaxy in April and May of 2020. Their analysis of the object’s properties provides support for some theoretical models for why blazars are rare in the early universe. The researchers reported their results in the journal Astronomy & Astrophysics.

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Filed Under: News, Universe Tagged With: billion, blazar, brightest, core, distance, earth, galaxy, jet, light-years, radio, universe

The role of the Sun in the spread of viral respiratory diseases

November 4, 2020 by Zakia

Why do most viral epidemics spread cyclically in autumn and winter in the globe’s temperate regions?

According to an interdisciplinary team of researchers of the Italian National Institute for Astrophysics, the University of Milan, the Lombardy regional agency for the environment and the Don Gnocchi Foundation, the answer is intimately related to our Sun: their theoretical model shows that both the prevalence and evolution of epidemics are strongly correlated with the amount of daily solar irradiation that hits a given location on the Earth at a given time of the year.

The work of the Italian team was recently published in the iScience journal. [Read more…] about The role of the Sun in the spread of viral respiratory diseases

Filed Under: News, science Tagged With: bacterium, cycles, earth, epidemics, influenza, intrinsic, irradiation, mechanism, model, regions, seasonality, solar, temperate, virus

AI and photonics join forces to make it easier to find ‘new Earths’

October 22, 2020 by Zakia

Australian scientists have developed a new type of sensor to measure and correct the distortion of starlight caused by viewing through the Earth’s atmosphere, which should make it easier to study the possibility of life on distant planets.

Using artificial intelligence and machine learning, University of Sydney optical scientists have developed a sensor that can neutralise a star’s “twinkle” caused by heat variations in the Earth’s atmosphere. This will make the discovery and study of planets in distant solar systems easier from optical telescopes on Earth.

“The main way we identify planets orbiting distant stars is by measuring regular dips in starlight caused by planets blocking out bits of their sun,” said lead author Dr Barnaby Norris, who holds a joint position as a Research Fellow in the University of Sydney Astrophotonic Instrumentation Laboratory and in the University of Sydney node of Australian Astronomical Optics in the School of Physics. [Read more…] about AI and photonics join forces to make it easier to find ‘new Earths’

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Filed Under: News, Research, Uncategorized Tagged With: directly, earth, methods, optical, photonic, physics, planet's, sydney, telescopes, university, wavefront

Carbon-rich exoplanets may be made of diamonds

September 14, 2020 by Zakia Leave a Comment

As missions like NASA’s Hubble Space Telescope, TESS and Kepler continue to provide insights into the properties of exoplanets (planets around other stars), scientists are increasingly able to piece together what these planets look like, what they are made of, and if they could be habitable or even inhabited.

In a new study published recently in The Planetary Science Journal, a team of researchers from Arizona State University (ASU) and the University of Chicago have determined that some carbon-rich exoplanets, given the right circumstances, could be made of diamonds and silica.

“These exoplanets are unlike anything in our solar system,” says lead author Harrison Allen-Sutter of ASU’s School of Earth and Space Exploration. [Read more…] about Carbon-rich exoplanets may be made of diamonds

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Filed Under: Space Tagged With: carbon-rich, diamond, earth, geologically, life, oxygen, planet's, space, study, telescope, university, water

NASA-funded research creates DNA-like molecule to aid search for alien life

May 30, 2019 by Editor

In a research breakthrough funded by NASA, scientists have synthesized a molecular system that, like DNA, can store and transmit information.

This unprecedented feat suggests there could be an alternative to DNA-based life, as we know it on Earth – a genetic system for life that may be possible on other worlds.

This new molecular system, which is not a new life form, suggests scientists looking for life beyond Earth may need to rethink what they are looking for. The research appears in Thursday’s edition of Science Magazine.

DNA is a complex molecule that stores and transmits genetic information, is passed from parent to offspring in all living organisms on Earth, and its components include four key ingredients called nucleotides – all standard for life as we know it. But, what about life on other worlds?

“Life detection is an increasingly important goal of NASA’s planetary science missions, and this new work will help us to develop effective instruments and experiments that will expand the scope of what we look for,” said Lori Glaze, acting director of NASA’s Planetary Science Division.

One way to imagine the kinds of foreign structures found on other worlds is to try to create something foreign on Earth. A team of researchers, led by Steven Benner at the Foundation for Applied Molecular Evolution in Alachua, Florida, successfully achieved the fabrication of a new informational molecular system that is like DNA, except in one key area: The new molecule has eight informational ingredients instead of four.

The synthetic DNA includes the four nucleotides present in Earth life – adenine, cytosine, guanine, and thymine – but also four others that mimic the structures of the informational ingredients in regular DNA. The result is a double-helix structure that can store and transfer information.

Benner’s team, which collaborated with laboratories at the University of Texas in Austin, Indiana University Medical School in Indianapolis, and DNA Software in Ann Arbor, Michigan, dubbed their creation “hachimoji” DNA (from the Japanese “hachi,” meaning “eight,” and “moji,” meaning “letter”). Hachimoji DNA meets all the structural requirements that allow our DNA to store, transmit and evolve information in living systems.

“By carefully analyzing the roles of shape, size and structure in hachimoji DNA, this work expands our understanding of the types of molecules that might store information in extraterrestrial life on alien worlds,” said Benner.

Scientists have much more to do on the question of what other genetic systems could serve as the foundation for life, and where such exotic organisms could be found. However, this study opens the door to further research on ways life could structure itself in environments that we consider inhospitable, but which might be teeming with forms of life we haven’t yet imagined.

“Incorporating a broader understanding of what is possible in our instrument design and mission concepts will result in a more inclusive and, therefore, more effective search for life beyond Earth,” said Mary Voytek, senior scientist for Astrobiology at NASA Headquarters.

One of NASA’s goals is to search for life on other planets like Mars, where there was once flowing water and a thick atmosphere, or moons of the outer solar system like Europa and Enceladus, where vast water oceans churn under thick layers of ice. What if life on those worlds doesn’t use our DNA? How could we recognize it? This new DNA may be the key to answering these questions and many more.

This work also interests those interested in information as part of life.

“The discovery that DNA with eight nucleotide letters is suitable for storing and transmitting information is a breakthrough in our knowledge of the range of possibilities necessary for life,” said Andrew Serazin, president of Templeton World Charity Foundation in Nassau, The Bahamas, which also supported this work. “This makes a major contribution to the quest supported by Templeton World Charity Foundation to understand the fundamental role that information plays in both physics and biology.”

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Filed Under: Life, News Tagged With: dna, earth, life, nasa, system, worlds

NASA’s InSight lander captures audio of first likely ‘quake’ on Mars

May 6, 2019 by Editor

NASA’s Mars InSight lander has measured and recorded for the first time ever a likely “marsquake.”

The faint seismic signal, detected by the lander’s Seismic Experiment for Interior Structure (SEIS) instrument, was recorded on April 6, the lander’s 128th Martian day, or sol.

This is the first recorded trembling that appears to have come from inside the planet, as opposed to being caused by forces above the surface, such as wind. Scientists still are examining the data to determine the exact cause of the signal.

“InSight’s first readings carry on the science that began with NASA’s Apollo missions,” said InSight Principal Investigator Bruce Banerdt of NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California. “We’ve been collecting background noise up until now, but this first event officially kicks off a new field: Martian seismology!”

The new seismic event was too small to provide solid data on the Martian interior, which is one of InSight’s main objectives. The Martian surface is extremely quiet, allowing SEIS, InSight’s specially designed seismometer, to pick up faint rumbles. In contrast, Earth’s surface is quivering constantly from seismic noise created by oceans and weather. An event of this size in Southern California would be lost among dozens of tiny crackles that occur every day.

“The Martian Sol 128 event is exciting because its size and longer duration fit the profile of moonquakes detected on the lunar surface during the Apollo missions,” said Lori Glaze, Planetary Science Division director at NASA Headquarters.

NASA’s Apollo astronauts installed five seismometers that measured thousands of quakes while operating on the Moon between 1969 and 1977, revealing seismic activity on the Moon. Different materials can change the speed of seismic waves or reflect them, allowing scientists to use these waves to learn about the interior of the Moon and model its formation. NASA currently is planning to return astronauts to the Moon by 2024, laying the foundation that will eventually enable human exploration of Mars.

InSight’s seismometer, which the lander placed on the planet’s surface on Dec. 19, 2018, will enable scientists to gather similar data about Mars. By studying the deep interior of Mars, they hope to learn how other rocky worlds, including Earth and the Moon, formed.

Three other seismic signals occurred on March 14 (Sol 105), April 10 (Sol 132) and April 11 (Sol 133). Detected by SEIS’ more sensitive Very Broad Band sensors, these signals were even smaller than the Sol 128 event and more ambiguous in origin. The team will continue to study these events to try to determine their cause.

Regardless of its cause, the Sol 128 signal is an exciting milestone for the team.

“We’ve been waiting months for a signal like this,” said Philippe Lognonné, SEIS team lead at the Institut de Physique du Globe de Paris (IPGP) in France. “It’s so exciting to finally have proof that Mars is still seismically active. We’re looking forward to sharing detailed results once we’ve had a chance to analyze them.”

Most people are familiar with quakes on Earth, which occur on faults created by the motion of tectonic plates. Mars and the Moon do not have tectonic plates, but they still experience quakes – in their cases, caused by a continual process of cooling and contraction that creates stress. This stress builds over time, until it is strong enough to break the crust, causing a quake.

Detecting these tiny quakes required a huge feat of engineering. On Earth, high-quality seismometers often are sealed in underground vaults to isolate them from changes in temperature and weather. InSight’s instrument has several ingenious insulating barriers, including a cover built by JPL called the Wind and Thermal Shield, to protect it from the planet’s extreme temperature changes and high winds.

SEIS has surpassed the team’s expectations in terms of its sensitivity. The instrument was provided for InSight by the French space agency, Centre National d’Études Spatiales (CNES), while these first seismic events were identified by InSight’s Marsquake Service team, led by the Swiss Federal Institute of Technology.

“We are delighted about this first achievement and are eager to make many similar measurements with SEIS in the years to come,” said Charles Yana, SEIS mission operations manager at CNES.

JPL manages InSight for NASA’s Science Mission Directorate. InSight is part of NASA’s Discovery Program, managed by the agency’s Marshall Space Flight Center in Huntsville, Alabama. Lockheed Martin Space in Denver built the InSight spacecraft, including its cruise stage and lander, and supports spacecraft operations for the mission.

A number of European partners, including CNES and the German Aerospace Center (DLR), support the InSight mission. CNES provided the SEIS instrument to NASA, with the principal investigator at IPGP. Significant contributions for SEIS came from IPGP; the Max Planck Institute for Solar System Research in Germany; the Swiss Federal Institute of Technology (ETH Zurich) in Switzerland; Imperial College London and Oxford University in the United Kingdom; and JPL. DLR provided the Heat Flow and Physical Properties Package (HP3) instrument, with significant contributions from the Space Research Center of the Polish Academy of Sciences and Astronika in Poland. Spain’s Centro de Astrobiología supplied the temperature and wind sensors.

Filed Under: Space Tagged With: allowing, apollo, april, astronauts, built, california, caused, center, changes, cnes, contributions, created, data, day, de, detected, determine, dlr, earth, enable, event, events, exciting, faint, federal, including, insight, insight's, institute, instrument, interior, investigator, ipgp, jpl, lander, landers, learn, mars, marsquake, martian, measured, mission, missions, moon, nasa, nasa's, noise, occur, operations, planet's, plates, principal, provided, quake, quakes, recorded, science, scientists, seis, seismic, seismometer, seismometers, sensors, signal, signals, size, sol, space, spacecraft, stress, surface, swiss, team, technology, tectonic, temperature, time, tiny, waves, weather, will, wind

NASA sends CubeSats to space on first dedicated launch with US partner Rocket Lab

May 3, 2019 by Editor

A series of new CubeSats now are in space, conducting a variety of scientific investigations and technology demonstrations, following launch Sunday of Rocket Lab’s first mission for NASA under a Venture Class Launch Services (VCLS) contract.

An Electron rocket lifted off at 1:33 a.m. EST (7:33 p.m. NZDT) from the company’s launch complex on the Mahia Peninsula in New Zealand, marking the first time CubeSats have launched for NASA on a rocket designed specifically for small payloads.

“With the VCLS effort, NASA has successfully advanced the commercial launch service choices for smaller payloads, providing viable dedicated small launch options as an alternative to the rideshare approach,” said Jim Norman, director of Launch Services at NASA Headquarters in Washington. “This first mission is opening the door for future launch options.” [Read more…] about NASA sends CubeSats to space on first dedicated launch with US partner Rocket Lab

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New environmental video highlights vision for change on Earth Day

May 2, 2019 by Editor

A few days ago, 52-year-old green manufacturer Earth Friendly Products, the maker of ECOS plant-powered cleaners, celebrated the 49th anniversary of Earth Day at its corporate headquarters in Cypress, California, by premiering a short video that is appearing this week at the EarthxFilm festival in Dallas, Texas. (See below.)

The video will be featured online and at film festivals and environmental summits across the U.S. throughout 2019.

Titled “The Artist,” the video is the creation of innovative young Greek filmmaker Petros Antoniadis and Los Angeles-based environmental artist and social activist Velia De Iuliis. Earth Friendly Products is using the art video to express its vision for a better future for the earth.

In the video, the narrator states:
“We imagine a different world
A world where air pollution no longer exists
Where clean water is not a privilege
A world without waste
And we’re working to create that world today with you
Clean, healthy and sustainable
Making the future today in the world’s first carbon neutral, water neutral, zero waste facilities.”

Speaking at the Earth Day event, Kelly Vlahakis-Hanks, president and CEO of Earth Friendly Products, said she was moved by the power of art to effect change. “Art is a powerful way to fight for the environment, and Petros’ talent and Velia’s passion have combined to bring to life our sustainability story and our vision for a safer, cleaner planet through art.”

Antoniadis has previously worked with the company on several corporate videos and said those experiences helped him to propose this idea to the company. “ECOS is an authentic brand that truly walks the talk. Getting to create and tell their story and communicate their vision was a joy,” said Antoniadis.

De Iuliis said she was deeply moved by ECOS’ story and jumped at the opportunity to take part in the project. “My work is about conservation, so I was honored to play the role of the artist in the story, to help advocate art as a way to highlight the environment,” said De Iuliis. “Earth Friendly Products is at the forefront of the environmental world, and their ECOS products embody that leadership.”

The Earth Day celebration at Earth Friendly Products that featured the premiere of “The Artist” also featured guest speakers on environmental sustainability and policy.

Congressman Alan Lowenthal, who serves California’s 47th Congressional District, spoke at the event and praised Earth Friendly Products for its unsurpassed record in sustainability. “Every time I come here to visit, I am inspired — there’s no other word for it,” says Lowenthal. “The core values of this company are to make sure they provide safer products and protect this planet for future generations. There is nothing more important than protecting this environment, which is so fragile.”

Filed Under: Features, Uncategorized Tagged With: antoniadis, art, artist, company, day, de, earth, ecos, environment, environmental, featured, friendly, future, iuliis, products, story, sustainability, today, video, vision

NASA selects mission to study space weather from ISS

April 29, 2019 by Editor

NASA has selected a new mission that will help scientists understand and, ultimately, forecast the vast space weather system around our planet.

Space weather is important because it can have profound impacts – affecting technology and astronauts in space, disrupting radio communications and, at its most severe, overwhelming power grids.

The new experiment will, for the first time, obtain global observations of an important driver of space weather in a dynamic region of Earth’s upper atmosphere that can cause interference with radio and GPS communications.


The Atmospheric Waves Experiment (AWE) mission will cost $42 million and is planned to launch in August 2022, attached to the exterior of the Earth-orbiting International Space Station.

From its space station perch, AWE will focus on colorful bands of light in Earth’s atmosphere, called airglow, to determine what combination of forces drive space weather in the upper atmosphere.

Researchers once thought that only the Sun’s constant outflow of ultraviolet light and particles, the solar wind, could affect the region. However, recently they have learned that solar variability is not enough to drive the changes observed, and Earth’s weather also must be having an effect.

To help unravel that connection, AWE will investigate how waves in the lower atmosphere, caused by variations in the densities of different packets of air, impact the upper atmosphere.

AWE is a Mission of Opportunity under NASA’s Heliophysics Explorers Program, which conducts focused scientific research and develops instrumentation to fill the scientific gaps between the agency’s larger missions.

Since the 1958 launch of NASA’s first satellite Explorer 1, which discovered Earth’s radiation belts, the Explorers Program has supported more than 90 missions. The Uhuru and Cosmic Background Explorer (COBE) missions led to Nobel prizes for their investigators.

“The Explorers Program seeks innovative ideas for small and cost-constrained missions that can help unravel the mysteries of the universe and explore our place in it,” said Paul Hertz, NASA’s Director of Astrophysics. “This mission absolutely meets that standard with a creative and cost-effective mission to solve mysteries about Earth’s upper atmosphere.”

AWE was selected for development based on its potential science value and the feasibility of its development plans. The mission is led by Michael Taylor at Utah State University in Logan and it is managed by the Explorers Program Office at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

NASA also has selected the Sun Radio Interferometer Space Experiment (SunRISE) for a seven-month, $100,000 extended formulation study. SunRISE would be an array of six CubeSats operating like one large radio telescope. This proposed mission would investigate how giant space weather storms from the Sun, called solar particle storms, are accelerated and released into planetary space.

While SunRISE has not yet demonstrated its readiness for the next phase of mission development, the proposed concept represents a compelling use of new NASA-developed technology. SunRISE is led by Justin Kasper at the University of Michigan in Ann Arbor and managed by NASA’s Jet Propulsion Laboratory in Pasadena, California.

The Explorers Program, the oldest continuous NASA program, is designed to provide frequent, low-cost access to space using principal investigator-led space science investigations relevant to the work of NASA’s Science Mission Directorate in astrophysics and heliophysics.

The program is managed by Goddard for the Science Mission Directorate, which conducts a wide variety of research and scientific exploration programs for Earth studies, space weather, the solar system and universe.

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Filed Under: News Tagged With: atmosphere, awe, earth, explorers, mission, missions, nasa, program, radio, science, solar, space, sunrise, upper, weather, will

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