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Comets Are Oxygen Factories

Scientists have figured out how comet 67P and others like it are generating oxygen abiotically. Learn more at HowStuffWorks.

Let's Celebrate Rosetta After Its Crash-landing in a Comet Pit

After tagging along with comet 67P for two years, the Rosetta spacecraft ended its mission today in a blaze of glory. Read more at HowStuffWorks Now.

How do you land a spaceship on a comet?

Landing on a speeding comet is tricky, but the Rosetta mission is up to the task. Read how the space agency plans to land on a comet at HowStuffWorks.

Icy Comets Orbiting a Star Like Our Sun Spotted for the First Time

Astronomers have discovered a cloud of icy comets and gas around a star similar to our sun. Learn more about comets in this HowStuffWorks Now article.

Comet Strike Could Explain PETM, Earth's Apocalyptic Ancient Climate Spike

Did a comet strike cause the PETM? How can we explain climate change 55 million years ago? This HowStuffWorks Now article looks at new research.

Watch: The Sun Obliterate a Doomed Comet

A NASA spacecraft detected a sun-grazing comet plunging toward the sun — and its death. Learn more about sun-grazing comets at HowStuffWorks Now.

How Space Collisions Work

Space collisions happen when stars, asteroids and even galaxies smash into one another. Learn what space collisions look like and what the results are.

How do space telescopes die?

After space telescopes break, where do they end up? Find out how space telescopes die at HowStuffWorks.

Why is it clearer to view space through an infrared telescope?

Infrared telescopes can provide views of limitless galactic wonders. Find out why they provide a clearer view of space compared to other telescopes.

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