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We Could Spread Life to the Milky Way With Comets. But Should We?
Here’s a thorny problem: What if life doesn’t always appear on planets that can support it? What if we find more and more exoplanets and determine that some of them are habitable? What if we also...
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Comet Impacts Could Have Brought the Raw Ingredients for Life to Europa’s Ocean
Jupiter is the most-visited planet in the Solar System, thanks largely to NASA. It all started with Pioneer 10 and 11, followed by Voyager 1 and 2. Those were all flyby missions, and it wasn’t until...
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Spectacular Images of the Rare ‘Green Comet’ Gracing Our Skies
A rare ‘green’ comet is passing through our Solar System and astrophotographers have been out capturing photos. While this comet, named C/2022 E3 (ZTF) is not yet visible yet to the naked eye, it...
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Why Does ‘Oumuamua Follow Such a Bizarre Orbit? Hydrogen Outgassing
Nothing excites space enthusiasts like a good alien mystery. The interstellar visitor ‘Oumuamua presented one as it moved through the inner solar system in 2017. At least one scientist has insisted...
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Here's How NASA is Planning to Protect Earth From Asteroids and Comets
The large impact craters dotting our planet are powerful reminders that asteroids and comets strike the Earth from time to time. As often said, it’s not a question of “if”; it’s a matter of “when” our...
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JWST Finds a Comet Still Holding Onto Water in the Main Asteroid Belt
Comets are instantly recognizable by their tails of gas and dust. Most comets originate in the far, frozen reaches of our Solar System, and only visit the inner Solar System occasionally. But some are...
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Some of the Moon's Craters are From Interstellar Impacts. Can We Tell Which?
By discovering two interstellar objects (ISOs), we know that asteroids and comets from other star systems pass through the Solar System from time to time. By inference, some of these must have crashed...
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A Star Passed Through the Oort Cloud Less Than 500,000 Years Ago. It Wasn’t...
As stars in the Milky Way move through space, some of them have an unexpected effect on the Solar System. Over time, one comes closer to the Sun during its orbit in the galaxy. Some of them actually...
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Comets: Why study them? What can they teach us about finding life beyond Earth?
Universe Today has explored the importance of studying impact craters, planetary surfaces, exoplanets, astrobiology, and solar physics, and what this myriad of scientific disciplines can teach...
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Someone Just Found SOHO's 5,000th Comet
The Solar and Heliospheric Observatory (SOHO) was designed to examine the Sun, but as a side benefit, it has been the most successful comet hunter ever built. Since early in the mission, citizen...
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