Astronomy

Hubble observations suggest underground ocean on Jupiter’s largest moon

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

Astronomy Magazine - 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

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

OSIRIS catches glimpse of Rosetta’s shadow

Astronomy Magazine - Wed, 03/04/2015 - 05:00
With a resolution of 4 inches (11 centimeters) per pixel, these data from OSIRIS’ Narrow Angle Camera reveal highly detailed structures on Comet 67P’s surface.
Categories: Astronomy

NASA spacecraft nears historic dwarf planet arrival

Astronomy Magazine - Tue, 03/03/2015 - 05:00
Dawn will be the first mission to successfully visit a dwarf planet when it enters orbit around Ceres on Friday, March 6.
Categories: Astronomy

ALMA and VLT probe surprisingly dusty and evolved galaxy

Astronomy Magazine - Mon, 03/02/2015 - 05:00
This young and remote object provides tantalizing evidence for the rapid evolution of galaxies after the Big Bang.
Categories: Astronomy

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