Astronomy Magazine

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Updated: 1 hour 57 min ago

Spacecraft detects aurora and mysterious dust cloud around Mars

Wed, 03/18/2015 - 04:00
Although the source and composition of the dust are unknown, there is no hazard to MAVEN and other spacecraft orbiting Mars.
Categories: Astronomy

Iron rain fell on early Earth, new Z machine data supports

Wed, 03/18/2015 - 04:00
Instead of core formation occurring by iron sinking down to the growing Earth’s core in large blobs, that iron was vaporized, spread out in a plume over the surface of Earth and rained out as small droplets.
Categories: Astronomy

Colorful life-form catalog will help discern if we’re alone

Tue, 03/17/2015 - 04:00
This database gives us the first glimpse at what diverse worlds out there could look like.
Categories: Astronomy

New MESSENGER maps of Mercury’s surface chemistry provide clues to the planet’s history

Mon, 03/16/2015 - 04:00
The chemical variability revealed will provide critical constraints on future efforts to model and understand Mercury’s bulk composition and the ancient geological processes that shaped the planet’s mantle and crust
Categories: Astronomy

New desktop application has potential to increase asteroid detection

Mon, 03/16/2015 - 04:00
Analysis of images taken of our solar system’s main belt asteroids between Mars and Jupiter using a new algorithm showed a 15 percent increase in positive identification of new asteroids.
Categories: Astronomy

OSIRIS detects hints of ice in Rosetta comet’s neck

Fri, 03/13/2015 - 04:00
The Hapi region is located between 67P’s two lobes and has in the past months proven to be particularly active and the source of spectacular jets of dust and gas.
Categories: Astronomy

Hubble observations suggest underground ocean on Jupiter’s largest moon

Fri, 03/13/2015 - 04:00
The subterranean ocean on Ganymede is thought to have more water than all the water on Earth's surface.
Categories: Astronomy

Some habitable exoplanets could experience wildly unpredictable climates

Thu, 03/12/2015 - 04:00
The magnitude of the chaos can range widely, from planets whose orbits remain largely circular to those whose orbits get so elongated that a planet could slam into its host star.
Categories: Astronomy

Spacecraft data suggest Saturn moon’s ocean may harbor hydrothermal activity

Thu, 03/12/2015 - 04:00
The implications of such activity on a world other than our planet open up unprecedented scientific possibilities.
Categories: Astronomy

Unexpected gamma-ray emission from dwarf galaxy may point to new understanding of dark matter

Wed, 03/11/2015 - 04:00
The exact source of this high-energy light is uncertain at this point, but it just might be a signal of dark matter lurking at the galaxy’s center.
Categories: Astronomy

A grand extravaganza of new stars

Wed, 03/11/2015 - 04:00
This beautiful new image is the most detailed view of the southern constellation Ara.
Categories: Astronomy

New dwarf galaxies discovered in orbit around the Milky Way

Tue, 03/10/2015 - 04:00
The findings from newly released imaging data may help unravel the mysteries behind dark matter.
Categories: Astronomy

Mysterious phenomena in a gigantic galaxy-cluster collision

Tue, 03/10/2015 - 04:00
A new “true color” radio image of Abell 2256 suggests that previously unexpected physical processes are at work in galaxy cluster encounters.
Categories: Astronomy

Thermonuclear supernova ejects galaxy’s fastest star

Mon, 03/09/2015 - 04:00
US 708 is a rapidly rotating, compact helium star likely formed by interaction with a close companion.
Categories: Astronomy

The planet that lost an ocean’s worth of water

Fri, 03/06/2015 - 05:00
About 4 billion years ago, Mars likely had an ocean that covered almost half of the planet’s northern hemisphere.
Categories: Astronomy

NASA’s Chandra observatory finds cosmic showers halt galaxy growth

Fri, 03/06/2015 - 05:00
Researchers believe that gaseous precipitaton is key to understanding how giant black holes affect the growth of galaxies.
Categories: Astronomy

NASA spacecraft becomes first to orbit a dwarf planet

Fri, 03/06/2015 - 05:00
Dawn's trajectory puts it on the side of Ceres that faces away from the Sun until mid-April.
Categories: Astronomy

Hubble sees supernova split into four images by cosmic lens

Thu, 03/05/2015 - 05:00
The multiple images of the exploding star are caused by the powerful gravity of a foreground elliptical galaxy embedded in a massive cluster of galaxies.
Categories: Astronomy

One planet, four stars: the second known case of a planet in a quadruple star system

Thu, 03/05/2015 - 05:00
The discovery suggests that planets in quadruple systems might be less rare than once thought.
Categories: Astronomy

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