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NASA Jet Propulsion Laboratory on MSN
2 小时
NASA Researchers Discover More Dark Comets
These celestial objects look like asteroids but act like comets now come in two flavors. The first dark comet — a celestial ...
13 小时
Rare Icy Comet Discovered Between Mars and Jupiter
A celestial object found in 2021 within the asteroid belt was confirmed as a main-belt comet, distinguished by its icy composition and comet-like behaviors when near the Sun. Researchers emphasize the ...
5 小时
Astronomers find the smallest asteroids ever detected in the main belt
The asteroid that extinguished the dinosaurs is estimated to have been about 10 kilometers across. That's about as wide as ...
15 小时
Where Did Earth's Oceans Come From? Scientists Say They Originated From Comets
Scientists have long debated how Earth became rich in liquid water after the planet formed about 4.5 billion years ago. Now a ...
5 小时
A technosignature that could detect an extraterrestrial civilization's reliance on nuclear ...
Extraterrestrial civilizations need a great deal of energy as they advance up the Kardashev scale. Fossil fuels are finite, ...
10 小时
on MSN
What is Sunita Williams mimicking in space? NASA reveals her ‘Astrobee’ act
Astronaut Sunita Williams recently tested the Astrobee, a robotic flyer which is designed to help humans perform daily chores ...
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