Asteroids are chunks of rock left over from the formation of our solar system. Approximately half a billion asteroids with sizes greater than four meters in diameter orbit the sun, traveling through our solar system at speeds ...
Astronomy
Aug 4, 2023
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165
NASA's Parker Solar Probe accomplished a milestone on June 27, 2023—its 16th orbit of the sun. This included a close approach to the sun (known as perihelion) on June 22, 2023, where the spacecraft came within 5.3 million ...
Space Exploration
Jul 3, 2023
0
108
After 15 years of attempts, researchers using the James Webb Space Telescope (JWST) have for the first time successfully detected water outgassing from a main-belt comet.
Planetary Sciences
May 15, 2023
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81
An asteroid big enough to wipe out a city will zip harmlessly between Earth and the moon's orbit this weekend, missing both celestial bodies.
Planetary Sciences
Mar 23, 2023
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141
A massive eruption of solar material, known as a coronal mass ejection or CME, was detected escaping from the sun at 11:36 p.m. EDT on March 12, 2023.
Astronomy
Mar 15, 2023
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130
On Feb. 3, an asteroid more than three times as long as it is wide safely flew past Earth at a distance of about 1.1 million miles (1.8 million kilometers, or a little under five times the distance between the Moon and Earth). ...
Planetary Sciences
Feb 18, 2023
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612
NASA's Orion capsule reached the moon Monday, whipping around the far side and buzzing the lunar surface on its way to a record-breaking orbit with test dummies sitting in for astronauts.
Space Exploration
Nov 21, 2022
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74
NASA's Juno spacecraft has made the closest approach to Jupiter's tantalizing, icy moon Europa in more than 20 years.
Planetary Sciences
Sep 29, 2022
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488
On Thursday, Sept. 29, at 2:36 a.m. PDT (5:36 a.m. EDT), NASA's Juno spacecraft will come within 222 miles (358 kilometers) of the surface of Jupiter's ice-covered moon, Europa. The solar-powered spacecraft is expected to ...
Space Exploration
Sep 22, 2022
1
9
The vast majority of stars have planets. We know that from observations of exoplanetary systems. We also know some stars don't have planets, and perhaps they never had planets. This raises an interesting question. Suppose ...
Astronomy
Aug 1, 2022
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6
