(PhysOrg.com) -- The "habitable zone" is the region around a star where a suitable planet could sustain the conditions necessary for life. Most astronomers take it to be the region where the balance between stellar radiation ...
Astronomy
Aug 22, 2011
20
1
Some 458 million years ago, Earth was whacked in a double asteroid strike, leaving craters visible in Sweden today, space scientists reported on Thursday.
Space Exploration
Oct 23, 2014
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0
The United Arab Emirates unveiled plans Monday to send a spaceship to explore the solar system's main asteroid belt, the latest space project by the oil-rich nation after it launched the successful Hope spacecraft to Mars ...
Space Exploration
May 29, 2023
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93
Early planetary migration in the solar system has been long established, and there are myriad theories that have been put forward to explain where the planets were coming from. Theories such as the Grand Tack Hypothesis an ...
Astronomy
Jan 28, 2021
0
14
The main-belt asteroid (493) Griseldis was probably hit by another object last March. The results were reported on November 12 at the annual meeting of the Division for Planetary Sciences of the American Astronomical Society ...
Space Exploration
Nov 12, 2015
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In June 2018, Japan's Hayabusa2 spacecraft retrieved samples from asteroid Ryugu and successfully returned them to Earth. Researchers at Tohoku University have analyzed the samples and identified what they believe may be ...
Planetary Sciences
Feb 28, 2023
0
44
(PhysOrg.com) -- Deep in the heart of the asteroid belt, on its way to the first of the belt's two most massive inhabitants, NASA's ion-propelled Dawn spacecraft has eclipsed the record for velocity change produced by a spacecraft's ...
Space Exploration
Jun 8, 2010
11
0
A new set of high-velocity impact experiments suggests that the dwarf planet Ceres may be something of a cosmic dartboard: Projectiles that slam into it tend to stick.
Space Exploration
Oct 14, 2015
12
655
Before the Earth and other planets formed, the young sun was still surrounded by cosmic gas and dust. Over the millennia, rock fragments of various sizes formed from the dust. Many of these became building blocks for the ...
Astronomy
May 24, 2022
3
349
In the 1970s four spacecraft began their one-way trips out of our Solar System. As the first human-built objects to ever venture into interstellar space, NASA chose to place plaques on Pioneer 10 and 11 and golden records ...
Space Exploration
Jul 13, 2021
3
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