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Updated: 2 hours 58 min ago

An asteroid got knocked into a cometary orbit long ago

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From asteroid belt to Oort Cloud, C/2014 S3 may be an important relic of the early solar system.
Categories: Astronomy Headlines

Fermi helps link cosmic neutrino to blazar blast

Thu, 04/28/2016 - 03:00
NASA's Fermi Gamma-Ray Space Telescope helped astronomers connect a blazar's outburst to Big Bird, one of the most powerful neutrino events ever detected.
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Astronomers Spy a Massive Supernova in a Nearby Galaxy

Wed, 04/27/2016 - 14:00
A giant star that exploded 30 million years ago in a galaxy near Earth had a radius prior to going supernova that was 200 times larger than our sun, according to astrophysicists at Southern Methodist University, Dallas. The sudden blast hurled material outward from the star at a speed of 10,000 kilometers a second. That's equivalent to 36 million kilometers an hour or 22.4 million miles an hour, said SMU physicist Govinda Dhungana, lead author on the new analysis. The comprehensive analysis of t
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Curiosity leaves rough terrain for smoother, science rich lakebed

Wed, 04/27/2016 - 03:00
NASA's Curiosity Mars rover has nearly finished crossing a stretch of the most rugged and difficult-to-navigate terrain encountered during the mission's 44 months on Mars. The rover climbed onto the Naukluft Plateau of lower Mount Sharp in early March after spending several weeks investigating sand dunes. The plateau's sandstone bedrock has been carved by eons of wind erosion into ridges and knobs. The path of about a quarter mile (400 meters) westward across it is taking Curiosity toward smooth
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SpaceX Reportedly Sets Its Sites on Mars 'As Soon as 2018'

Wed, 04/27/2016 - 03:00
In a tweet, the company says it's prepared to send a Dragon to Mars within the decade.
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Cassini Finds a Lake On Titan That's Almost Completely Methane

Tue, 04/26/2016 - 17:00
Saturn's largest moon is covered in seas and lakes of liquid hydrocarbons – and one sea has now been found to be filled with pure methane, with a seabed covered by a sludge of organic-rich material, and possibly surrounded by wetlands. Of all the moons in the Solar System, Titan is the only one with a thick atmosphere and large liquid reservoirs on its surface – in some ways making it more like a planet such as Earth. Both Earth and Titan have atmospheres dominated by nitrogen, mor
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Astronomers Find a Moon Hiding Around Makemake in Hubble Data

Tue, 04/26/2016 - 17:00
Once a lonely ice block, now it seems the dwarf planet may have a close-in companion.
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Mars’ surface revealed in unprecedented detail

Tue, 04/26/2016 - 03:00
Researchers stacked and matched images taken from orbit to reveal objects at a resolution up to five times greater than previously achieved.
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Could NASA’s asteroid mission visit a third world

Mon, 04/25/2016 - 03:00
The Dawn probe is currently in orbit around Ceres after a visit to Vesta. Now, its researchers want to visit a third world to finish out the mission.
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Mission Manager Update: Kepler recovered and returned to the K2 mission

Mon, 04/25/2016 - 03:00
The spacecraft is now ready for science operations, officially starting K2's new gravitational microlensing campaign, known as Campaign 9.
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Cosmic beacons reveal the Milky Way’s ancient core

Fri, 04/22/2016 - 03:00
Astronomers have discovered that the central 2,000 light-years within the Milky Way Galaxy hosts an ancient population of stars.
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Brief history of earth imaging

Fri, 04/22/2016 - 03:00
This Earth Day, we can remember one of the catalysts: an image of the entire Earth taken from above.
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Researchers Spy Traces of a Supernova In Earth-bound Cosmic Rays

Thu, 04/21/2016 - 16:00
Cosmic rays pelting the upper atmosphere are evidence of a recent supernova in the cosmic neighborhood.
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Lone planetary-mass object found in family of stars

Thu, 04/21/2016 - 03:00
Scientists have identified a free-floating planetary-mass object within a young star family, called the TW Hydrae association.
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NASA missions measure solar flare from 2 spots in space

Wed, 04/20/2016 - 03:00
Scientists want to pin down the processes that create solar flares and even some day predict them before our communications can be interrupted.
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ESA Finds a Frigid Surprise Hiding at Venus' Poles

Tue, 04/19/2016 - 03:00

Venus may be boiling hot, but its poles are very, very cold.

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Comets in the “X”-treme

Mon, 04/18/2016 - 03:00
Scientists have determined that comets produce X-ray emission when particles in the solar wind strike the atmosphere of the comet.
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Saturn spacecraft samples interstellar dust

Mon, 04/18/2016 - 03:00
NASA’s Cassini spacecraft has detected the faint but distinct signature of dust coming from beyond our solar system.
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Dwarf dark galaxy hidden in ALMA gravitational lens image

Thu, 04/14/2016 - 03:00
This discovery paves the way for ALMA to find many more such objects and could help astronomers address important questions on the nature of dark matter.
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New hypervelocity binary star challenges dark matter, stellar acceleration models

Wed, 04/13/2016 - 03:00
While all previous hypervelocity stars are single, PB 3877 is the first wide binary star found to travel at such a high speed.
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