Astronomy/Space Science

Results 21 - 40 of 1369.

Astronomy / Space Science - 20.02.2019
Is Neptune's newest moon a chip off the old block?
Is Neptune’s newest moon a chip off the old block?
The solar system can be a violent place. Astronomers now think that Neptune's tiniest moon, Hippocamp, was chipped off a larger moon, Proteus, by a cosmic collision billions of years ago. The moon was uncovered in Hubble Space Telescope photographs taken in 2013 and has puzzled astronomers ever since.

Astronomy / Space Science - Physics - 20.02.2019
Cosmic dust forms in supernovae blasts
Scientists claim to have solved a longstanding mystery as to how cosmic dust, the building blocks of stars and planets, forms across the Universe. Cosmic dust contains tiny fragments or organic material and is spread out across the Universe. The dust is primarily formed in stars and is then blown off in a slow wind or a massive star explosion.

Astronomy / Space Science - 19.02.2019
Astronomers detect hundreds of thousands of previously unknown galaxies
Astronomers detect hundreds of thousands of previously unknown galaxies
A major new radio sky survey has revealed hundreds of thousands of previously undetected galaxies, shedding new light on many research areas including the physics of black holes and how clusters of galaxies evolve. An international team of more than 200 astronomers from 18 countries, including researchers from the University of Oxford, has published the first phase of the survey at unprecedented sensitivity using the Low Frequency Array (LOFAR) telescope.

Astronomy / Space Science - Earth Sciences - 18.02.2019
Rosetta's comet sculpted by stress
Rosetta’s comet sculpted by stress
Feeling stressed? You're not alone. ESA's Rosetta mission has revealed that geological stress arising from the shape of Comet 67P/Churyumov-Gerasimenko has been a key process in sculpting the comet's surface and interior following its formation. Small, icy comets with two distinct lobes seem to be commonplace in the Solar System, with one possible mode of formation a slow collision of two primordial objects in the early stages of formation some 4.5 billion years ago.

Astronomy / Space Science - Physics - 18.02.2019
Space behaviour
Space behaviour
Europe's Columbus laboratory enters its eleventh year in space with steady operations, a few upgrades and several experiments in full swing. The physical behaviour of particles, liquids and cells in microgravity was the focus of ESA's activities on the International Space Station during the first weeks of February.

Astronomy / Space Science - Health - 15.02.2019
Astronaut photography benefiting the planet
Astronaut photography benefiting the planet
When astronauts take photographs of our planet while orbiting 400 km above our heads, they are doing much more than just taking pretty pictures. They are looking after the health of our planet and, ultimately, us too. Techniques used by astrophotographers looking at the stars and space exploration come together to measure the environmental impact of artificial lights at night.

Astronomy / Space Science - 15.02.2019
Tidal Tails - The Beginning Of The End Of An Open Star Cluster
Tidal Tails - The Beginning Of The End Of An Open Star Cluster
In the course of their life, open star clusters continuously lose stars to their surroundings. The resulting swath of tidal tails provides a glimpse into the evolution and dissolution of a star cluster. Thus far only tidal tails of massive globular clusters and dwarf galaxies have been discovered in the Milky Way system.

Astronomy / Space Science - 14.02.2019
Where is the Universe Hiding its Missing Mass?
Astronomers have spent decades looking for something that sounds like it would be hard to miss: about a third of the "normal" matter in the Universe. New results from NASA's Chandra X-ray Observatory may have helped them locate this elusive expanse of missing matter. From independent, well-established observations, scientists have confidently calculated how much normal matter - meaning hydrogen, helium and other elements - existed just after the Big Bang.

Astronomy / Space Science - Physics - 14.02.2019
Earth's atmosphere stretches out to the Moon - and beyond
Earth’s atmosphere stretches out to the Moon - and beyond
The outermost part of our planet's atmosphere extends well beyond the lunar orbit - almost twice the distance to the Moon. A recent discovery based on observations by the ESA/NASA Solar and Heliospheric Observatory, SOHO, shows that the gaseous layer that wraps around Earth reaches up to 630 000 km away, or 50 times the diameter of our planet.

Astronomy / Space Science - Environment - 12.02.2019
"Better to dry a rocky planet before use"
Earth's solid surface and clement climate may be in part due to a massive star in the birth environment of the Sun. Without its radioactive elements injected into the early solar system, our home planet could be a hostile ocean world covered in global ice sheets. This is demonstrated by computer simulations in which the National Centre of Competence in Research PlanetS, based at the University of Bern, was involved.

Earth Sciences - Astronomy / Space Science - 11.02.2019
Indonesia's devastating 2018 earthquake was a rare 'supershear,' according to UCLA-led study
Indonesia’s devastating 2018 earthquake was a rare ’supershear,’ according to UCLA-led study
The devastating 7.5 magnitude earthquake that struck the Indonesian island of Sulawesi last September was a rare “supershear” earthquake, according to a study led by UCLA researchers. Only a dozen supershear quakes have been identified in the past two decades, according to Lingsen Meng, UCLA's Leon and Joanne V.C. Knopoff Professor of Physics and Geophysics and one of the report's senior authors.

Astronomy / Space Science - 08.02.2019
Opportunities on International Space Station
Opportunities on International Space Station
ESA > Our Activities > Human and Robotic Exploration > Research European research has been a part of the International Space Station since the very first expeditions to our orbiting science facility in 2001. "ESA regularly announces new research opportunities to conduct experiments that are out-of-this world.

Astronomy / Space Science - 07.02.2019
Gaia clocks new speeds for Milky Way-Andromeda collision
Gaia clocks new speeds for Milky Way-Andromeda collision
ESA's Gaia satellite has looked beyond our Galaxy and explored two nearby galaxies to reveal the stellar motions within them and how they will one day interact and collide with the Milky Way - with surprising results. Our Milky Way belongs to a large gathering of galaxies known as the Local Group and, along with the Andromeda and Triangulum galaxies - also referred to as M31 and M33, respectively - makes up the majority of the group's mass.

Astronomy / Space Science - 07.02.2019
Science on a plane - ESA's next parabolic flight campaign
Science on a plane - ESA’s next parabolic flight campaign
ESA > Our Activities > Human and Robotic Exploration > Research In May engineers, pilots, researchers and scientists will convene in Bordeaux, France, for ESA's 71st parabolic flight campaign. Over the course of three days they will fly on a specially-fitted commercial aircraft, testing equipment and running research as the pilots put the plane through repeated parabolas, giving the passengers and their experiments brief bouts of microgravity.

Astronomy / Space Science - Environment - 07.02.2019
ESA's Mars rover has a name - Rosalind Franklin
ESA’s Mars rover has a name - Rosalind Franklin
ESA > Our Activities > Human and Robotic Exploration > Exploration > ExoMars The ExoMars rover that will search for the building blocks of life on the Red Planet has a name: Rosalind Franklin.The prominent scientist behind the discovery of the structure of DNA will have her symbolic footprint on Mars in 2021.

Astronomy / Space Science - Physics - 04.02.2019
Giant impacts caused by interplanetary collisions
Giant impacts caused by interplanetary collisions
Astronomers have found fresh evidence for significant planetary diversity within a single exoplanet system, suggesting that giant high-speed collisions are partly responsible for planetary evolution. An international team of scientists led by Italy's National Institute for Astrophysics (INAF) and involving physicists from the University of Bristol spent three years observing the exoplanetary system Kepler-107 via the Telescopio Nazionale Galileo in La Palma.

Astronomy / Space Science - Life Sciences - 04.02.2019
Spotlight on Space Station science
Spotlight on Space Station science
Though all ESA astronauts are back on Earth, European science on the International Space Station is ongoing. Explore a few experiments underway right now in celebration of science at ESA. Learning the ropes Every ESA astronaut who flies to the International Space Station begins their training at the European Astronaut Centre in Cologne, Germany.

Astronomy / Space Science - Environment - 04.02.2019
Colliding Exoplanets
There are currently about 2000 confirmed exoplanets with radii less than about three Earth-radii, and measurements of their densities reveal an astonishing diversity. Some have densities lower than Neptune which is made mostly of volatiles (materials less dense than metal and rock, but Neptune has almost four times the Earth's radius), while others appear to have rock-like densities, as high as the Earth's or higher.

Environment - Astronomy / Space Science - 04.02.2019
Much of the surface ocean will shift in color by end of 21st century
Much of the surface ocean will shift in color by end of 21st century
Climate-driven changes in phytoplankton communities will intensify the blue and green regions of the world's oceans. Climate change is causing significant changes to phytoplankton in the world's oceans, and a new MIT study finds that over the coming decades these changes will affect the ocean's color, intensifying its blue regions and its green ones.

Astronomy / Space Science - Computer Science / Telecom - 01.02.2019
Stanford spurs AI navigation for space rendezvous software
A Stanford engineer is helping to develop an AI-based navigation system that would enable the space-borne equivalent of tow trucks to find and rescue satellites from so-called graveyard orbits. (Image credit: Pixabay) Stanford researchers are developing an AI-powered navigation system to direct spaceborne 'tow trucks' designed to restart or remove derelict satellites circling aimlessly in graveyard orbits.