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Astronomy/Space Science



Results 161 - 169 of 169.


Environment - Astronomy / Space Science - 18.01.2013
Effects of drought in the Amazon persist years later
Effects of drought in the Amazon persist years later
An area of the Amazon rainforest three times the size of the United kingdom was strongly affected by a drought that began in 2005, says a NASA-led team that includes researchers from Oxford. The results, together with observed increases in rainfall variability and associated forest damage in southern and western Amazonia during the past decade, suggest these rainforests may be witnessing the first signs of potential large-scale degradation due to climate change.

Astronomy / Space Science - 16.01.2013
Choosing the right people to go to Mars
When humans eventually travel to the Red Planet, the voyage will be long and difficult. The simulated Mars500 mission showed that every detail must be planned, including diet and sleep. The findings will also benefit those of us who stay behind. Mars500 locked six 'marsonauts' in a simulated spaceship near Moscow, Russia for 520 days, the time it would take to fly to Mars and back plus 30 days spent exploring its surface.

Physics - Astronomy / Space Science - 14.01.2013
Research Update: Atomic Motions Help Determine Temperatures Inside Earth
In December 2011, Caltech mineral-physics expert Jennifer Jackson reported that she and a team of researchers had used diamond-anvil cells to compress tiny samples of iron-the main element of the earth's core. By squeezing the samples to reproduce the extreme pressures felt at the core, the team was able to get a closer estimate of the melting point of iron. At the time, the measurements that the researchers made were unprecedented in detail.

Astronomy / Space Science - 10.01.2013
Life possible on extrasolar moons
Life possible on extrasolar moons
In their search for habitable worlds, astronomers have started to consider exomoons, or those likely orbiting planets outside the solar system. In a new study, a pair of researchers has found that exomoons are just as likely to support life as exoplanets. The research, conducted by Rory Barnes of the University of Washington and the NASA Astrobiology Institute and René Heller of Germany's Leibniz Institute for Astrophysics Potsdam , will appear in the January issue of Astrobiology.

Astronomy / Space Science - 08.01.2013
First
First "Bone" of the Milky Way Identified
Long Beach, CA - Our Milky Way is a spiral galaxy - a pinwheel-shaped collection of stars, gas and dust. It has a central bar and two major spiral arms that wrap around its disk. Since we view the Milky Way from the inside, its exact structure is difficult to determine. Astronomers have identified a new structure in the Milky Way: a long tendril of dust and gas that they are calling a "bone." "This is the first time we've seen such a delicate piece of the galactic skeleton," says lead author Alyssa Goodman of the Harvard-Smithsonian Center for Astrophysics (CfA).

Astronomy / Space Science - Career - 07.01.2013
Within 'habitable zone,' more planets than we knew
Within ’habitable zone,’ more planets than we knew
The number of known places in our galaxy theoretically hospitable to life may be significantly greater than previously thought, according to new research. Researchers with Planet Hunters are reporting the discovery of a Jupiter-sized planet in the so-called "habitable zone" of a star similar to Earth's sun, as well as the identification of 15 new candidate planets also orbiting within their star's habitable zone.

Astronomy / Space Science - 07.01.2013
'Traffic jam' of moons in habitable zone
'Traffic jam' of moons in habitable zone
Volunteers from the Planethunters.org website, part of the Oxford University-led Zooniverse project, have discovered 15 new planet candidates orbiting in the habitable zones of other stars. Added to the 19 similar planets already discovered in habitable zones, where the temperature is neither too hot nor too cold for liquid water, the new finds suggest that there may be a 'traffic jam' of all kinds of strange worlds in regions that could potentially support life.

Astronomy / Space Science - Health - 06.01.2013
Penn Medicine: Simulated Mission to Mars Reveals Critical Data About Astronauts' Sleep and Activity Needs
Penn Medicine: Simulated Mission to Mars Reveals Critical Data About Astronauts' Sleep and Activity Needs
In the first study of its kind, a team of researchers led by faculty at the Perelman School of Medicine at the University of Pennsylvania and the Baylor College of Medicine, has analyzed data on the impact of prolonged operational confinement on sleep, performance, and mood in astronauts from a groundbreaking international effort to simulate a 520-day space mission to Mars.

Astronomy / Space Science - Continuing Education - 03.01.2013
Curious cosmic choreography: Small galaxies locked in a strange dance around large galaxies
A newly discovered form of circle dancing is perplexing astronomers; not due to its complex choreography, but because it's unclear why the dancers - dwarf galaxies - are dancing in a ring around the much larger Andromeda Galaxy. The international group of astronomers who discovered the curious cosmic choreography are surprised at the circle around Andromeda that the small orbiting galaxies have formed.