The asteroid Vesta is the second largest asteroid in our Solar System. With a diameter of about 330 miles, it orbits the sun between the planets Mars and Jupiter.
Astronomy
Aug 31, 2021
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4667
In a study released Wednesday, NASA researchers used precision-tracking data from the agency's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft to better understand ...
Astronomy
Aug 11, 2021
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314
The impactor believed to have wiped out the dinosaurs and other life forms on Earth some 66 million years ago likely came from the outer half of the main asteroid belt, a region previously thought to produce few impactors. ...
Astronomy
Jul 28, 2021
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2110
The ESA-Roscosmos Trace Gas Orbiter has set new upper limits on how much methane, ethane, ethylene and phosphine is in the martian atmosphere—four so-called 'biomarker' gases that are potential signs of life.
Space Exploration
Jul 20, 2021
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10
Comets that circle the Sun in very elongated orbits spread their debris so thin along their orbit or eject it out of the solar system altogether so that their meteor showers are hard to detect. From a new meteor shower survey ...
Space Exploration
May 20, 2021
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775
Evidence of recent volcanic activity on Mars shows that eruptions could have taken place within the past 50,000 years, a paper by Planetary Science Institute Research Scientist David Horvath says.
Planetary Sciences
May 6, 2021
6
435
By Earth standards, the surface of Mars is the picture of desolation. It's not only irradiated and cold enough to make Antarctica look balmy, but it's also one-thousands times drier than the driest places on Earth. However, ...
Space Exploration
May 3, 2021
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1156
On April 21, 1908, near Earth's North Pole, the Arctic explorer Frederick Albert Cook scrawled in his diary a memorable phrase: "We were the only pulsating creatures in a dead world of ice." These words may soon take on new ...
Space Exploration
Apr 19, 2021
9
441
The world's first ground-based observations of the bare nucleus of a comet nearing the end of its active life revealed that the nucleus has a diameter of 800 meters and is covered with large grains of phyllosilicate; on Earth ...
Space Exploration
Apr 6, 2021
3
355
Mars has lost most of its once plentiful water, with small amounts remaining in the planet's atmosphere. ESA's Mars Express now reveals more about where this water has gone, showing that its escape to space is accelerated ...
Planetary Sciences
Mar 22, 2021
2
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