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Results 61 - 80 of 237.


Astronomy / Space Science - 28.08.2019
Gaia untangles the starry strings of the Milky Way
Gaia untangles the starry strings of the Milky Way
Rather than leaving home young, as expected, stellar 'siblings' prefer to stick together in long-lasting, string-like groups, finds a new study of data from ESA's Gaia spacecraft. Exploring the distribution and past history of the starry residents of our galaxy is especially challenging as it requires astronomers to determine the ages of stars.

Physics - Astronomy / Space Science - 28.08.2019
Providing a solution to the worst-ever prediction in physics
Providing a solution to the worst-ever prediction in physics
A UNIGE physicist has proposed a new approach to solving one of the biggest theoretical problems in physics: the cosmological constant. The cosmological constant, introduced a century ago by Albert Einstein in his theory of general relativity, is a thorn in the side of physicists. The difference between the theoretical prediction of this parameter and its measurement based on astronomical observations is of the order of 10121.

Astronomy / Space Science - Environment - 26.08.2019
Mysterious cloud ’absorbers’ seen to drive Venusian albedo, climate
A composite image of the planet Venus as seen by the Japanese probe Akatsuki. Image from the Akatsuki Orbiter, built by Institute of Space and Astronautical Science/Japan Aerospace Exploration Agency As planets in our solar system go, Venus is one for the textbooks. Although about the same size as Earth, Venus is a terrestrial planet with a similar composition to our planet, and has about the same proximity to the sun.

Astronomy / Space Science - Environment - 22.08.2019
Scientist models exoplanet’s atmosphere
New research using data from NASA's Spitzer Space Telescope has provided a rare glimpse at the surface of a rocky planet outside our solar system. The planet may be similar to Mercury or Earth's moon, with little to no atmosphere. In the search for life beyond our galaxy, many scientists have their eyes turned toward orbs like Earth: rocky planets.

Physics - Astronomy / Space Science - 22.08.2019
Quantum gravity's tangled time
Quantum gravity’s tangled time
The theories of quantum mechanics and gravity are notorious for being incompatible, despite the efforts of scores of physicists over the past fifty years. However, recently an international team of researchers led by physicists from the University of Vienna, the Austrian Academy of Sciences as well as the University of Queensland (AUS) and the Stevens Institute of Technology (USA) have combined the key elements of the two theories describing the flow of time and discovered that temporal order between events can exhibit genuine quantum features.

Environment - Astronomy / Space Science - 21.08.2019
Salt deposits on Mars hold clues to sources of ancient water
For centuries, miners have burrowed into the earth in search of salt-laid down in thick layers from ancient oceans long since evaporated. When scientists saw huge deposits of salt on Mars, they immediately wondered whether it meant Mars too once had giant oceans. Yet it's remained unclear what those deposits meant about the Red Planet's climate.

Astronomy / Space Science - Earth Sciences - 20.08.2019
All instruments onboard Rosalind Franklin rover
All instruments onboard Rosalind Franklin rover
The full suite of scientific instruments, including cameras that will give us our eyes on Mars, the drill that will retrieve pristine soil samples from below the surface, and the onboard laboratory that will seek out signs of life are all installed on the ExoMars rover. The rover, named after the pioneering scientist Rosalind Franklin , is part of the ESA-Roscosmos ExoMars programme, and is nearing completion at Airbus Defence and Space, Stevenage, UK.

Astronomy / Space Science - 20.08.2019
Physicists design an experiment to pin down the origin of the elements
Physicists design an experiment to pin down the origin of the elements
With help from next-generation particle accelerators, the approach may nail down the rate of oxygen production in the universe. Popular Mechanics reporter David Grossman writes that MIT researchers have designed a new experiment to help identify the rate at which oxygen in the universe is produced. Grossman explains that the study could "lead toward better being able to understand if a dying star will take on the form of a black hole or a neutro

Astronomy / Space Science - Life Sciences - 19.08.2019
A space cocktail of science, bubbles and sounds
A space cocktail of science, bubbles and sounds
The International Space Station was again the stage for novel European science and routine operations during the first half of August. Plenty of action in the form of bubbles and sounds added to the mix in the run-up to a spacewalk and the comings and goings of visiting vehicles. ESA astronaut Luca Parmitano installed the Multiscale Boiling experiment , known affectionately as Rubi, in its new home in Europe's Columbus laboratory.

Physics - Astronomy / Space Science - 19.08.2019
Lab-based dark energy experiment narrows search options for elusive force
An experiment to test a popular theory of dark energy has found no evidence of new forces, placing strong constraints on related theories. Dark energy is the name given to an unknown force that is causing the universe to expand at an accelerating rate. It is very exciting to be able to discover something about the evolution of the universe using a table-top experiment in a London basement.

Astronomy / Space Science - Environment - 13.08.2019
James Webb Space Telescope could begin learning about TRAPPIST-1 atmospheres in a single year
James Webb Space Telescope could begin learning about TRAPPIST-1 atmospheres in a single year
New research from UW astronomers models how telescopes such as the James Webb Space Telescope will be able to study the planets of the intriguing TRAPPIST-1 system. NASA New research from astronomers at the University of Washington uses the intriguing TRAPPIST-1 planetary system as a kind of laboratory to model not the planets themselves, but how the coming James Webb Space Telescope might detect and study their atmospheres, on the path toward looking for life beyond Earth.

Astronomy / Space Science - Physics - 08.08.2019
Where in the universe can you find a black hole nursery?
Gravitational wave researchers at the University of Birmingham have developed a new model that could help astronomers track down the origin of heavy black hole systems in the Universe. Black holes are formed following the collapse of stars and possibly supernova explosions. These colossally dense objects are measured in terms of solar masses (M⊙) - the mass of our sun.

Astronomy / Space Science - Physics - 06.08.2019
Global team of scientists finish assembling next-generation dark matter detector
Global team of scientists finish assembling next-generation dark matter detector
The key component of the LUX-ZEPLIN experiment is ready to be sealed and lowered nearly 1.5 km underground, where it will search for dark matter. Dark matter is a mysterious form of matter thought to make up around 85% of the mass of the universe. However, because it is predicted to interact only very weakly with ordinary matter, it has so far not been detected.

Astronomy / Space Science - 05.08.2019
Two weeks of science and Beyond
Two weeks of science and Beyond
Over two weeks have flown by since ESA astronaut Luca Parmitano was launched to the International Space Station for his second six-month stay in orbit. His arrival, alongside NASA astronaut Andrew Morgan and Roscosmos Soyuz commander Alexander Skvortsov, boosted the Station's population to six and the crew has been busy ever since - performing a wide range of science in space.

Environment - Astronomy / Space Science - 30.07.2019
Washed up: Sargassum blankets beaches
Washed up: Sargassum blankets beaches
Over the last month, massive quantities of the Sargassum seaweed have been washing up on the shores of Mexico, Florida in the US and some Caribbean islands, creating a serious environmental problem and causing havoc for the tourist industry. ESA has been tracking this slimy infestation from space. Sargassum is a large brown algae, first spotted by Columbus during his voyage to the Americas.

Astronomy / Space Science - Environment - 30.07.2019
New exoplanet is smallest to be precisely measured
Earthlings have long daydreamed about faraway planets, but only recently have scientists been able to identify thousands of new exoplanets-and to learn more and more about what they look like. The latest: a new exoplanet discovered by NASA's Kepler spacecraft in the constellation of Cancer. Thanks to good timing and the planet's odd orbital pattern, scientists with the University of Chicago were able to calculate its mass more precisely than any other planet this small to date.

Physics - Astronomy / Space Science - 29.07.2019
Researchers recreate the sun’s solar wind and plasma "burps" on Earth
The Big Red Plasma Ball is pictured in Sterling Hall. It's one of several pieces of scientific equipment being used to study the fundamental properties of plasma in order to better understand the universe, where the hot gas is abundant. Photo: Jeff Miller The sun's solar wind affects nearly everything in the solar system.

Astronomy / Space Science - 29.07.2019
TESS discovers three new planets nearby, including temperate
TESS discovers three new planets nearby, including temperate "sub-Neptune"
Planetary system orbiting an unusually quiet star is ideal for future habitability searches. Cecelia Smith-Schoenwalder writes for US News & World Report about the planet hunting satellite TESS, which has recently discovered three new exoplanets. "The pace and productivity of TESS in its first year of operations has far exceeded our most optimistic hopes for the mission," said Senior Research Scientist George Ricker, TESS's principal investigator.

Astronomy / Space Science - Physics - 25.07.2019
Milky Way’s central black hole puts Einstein’s theories to the test
An artistic visualization of the star S0-2 as it passes by the supermassive black hole at the galactic center, which has warped the geometry of space and time. As the star gets closer to the supermassive black hole, its light undergoes a gravitational redshift that is predicted by Einstein's general theory of relativity.

Astronomy / Space Science - Environment - 25.07.2019
Astronomers spy Europa blocking distant star - thanks to Gaia
Astronomers spy Europa blocking distant star - thanks to Gaia
On 31 March 2017, Jupiter's moon Europa passed in front of a background star - a rare event that was captured for the first time by ground-based telescopes thanks to data provided by ESA's Gaia spacecraft. Previously, observatories had only managed to watch two of Jupiter's other moons - Io and Ganymede - during such an event.

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