For the past 30 years, the star β Pictoris has fascinated astronomers because it enables them to observe a planetary system in the process of formation. It is made up of at least two young planets, and also contains comets, ...
Astronomy
Apr 28, 2022
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198
Powerful radar systems have played a major role in the study of planets, moons, asteroids, and other objects in our Solar System for several decades, and now have a "unique role" to play in planetary defense—"providing ...
Astronomy
Apr 20, 2022
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10
Astronomers using NASA's Hubble Telescope have confirmed the existence the largest comet ever discovered, and it will pass by our sun in the next decade.
Astronomy
Apr 17, 2022
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125
An enormous comet—approximately 80 miles across, more than twice the width of Rhode Island—is heading our way at 22,000 miles per hour from the edge of the solar system. Fortunately, it will never get closer than 1 billion ...
Astronomy
Apr 12, 2022
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1174
As comets approach the Sun, they release gas and dust known to astronomers as cometary activity. For comets passing near or inside Earth's orbit, this activity slows over successive orbits. University of Oklahoma astronomer ...
Astronomy
Mar 30, 2022
2
309
Asteroids hold many clues about the formation and evolution of planets and their satellites. Understanding their history can, therefore, reveal much about our solar system. While observations made from a distance using electromagnetic ...
Astronomy
Mar 22, 2022
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75
When the European Space Agency's Rosetta spacecraft discovered abundant molecular oxygen bursting from comet 67P/Churyumov-Gerasimenko (67P) in 2015, it puzzled scientists. They had never seen a comet emit oxygen, let alone ...
Astronomy
Mar 14, 2022
8
689
Using ground-based and space-based observations, a team of researchers has been monitoring a difficult-to-see comet carefully. It's called Comet 323P/SOHO, and it was discovered over 20 years ago in 1999. But it's difficult ...
Astronomy
Mar 14, 2022
1
30
A team of researchers with the Paris observatory and Instituto de Astrofísica de Andalucía-CSIC, has confirmed that comet 2014 UN271 is the largest comet ever observed. They published a paper describing their findings on ...
The rapid decline of the Hopewell culture about 1,500 years ago might be explained by falling debris from a near-Earth comet that created a devastating explosion over North America, laying waste to forests and Native American ...
Archaeology
Feb 1, 2022
0
165
