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Stories, updates, insights, and original analysis from The Planetary Society.

The Hera launch: What to expect

The European Space Agency (ESA) is preparing to launch a mission to study the aftermath of DART's impact on the asteroid moonlet Dimorphos.

What are binary asteroids?

Binary asteroid systems can be found near Earth, in the main asteroid belt, beyond Neptune, and more.

What are asteroids made of?

C-type, S-type, and M-type are the three most common kinds of asteroids. Here's what each type is made of.

What DART has taught us so far

NASA's DART mission showed that if we detect a dangerous asteroid headed toward Earth, knocking it off course with a spacecraft is a potential option.

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