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> What's the hard part here?

Detecting, then catching a small object, in space, traveling at 10-20 thousand kilometers per hour.

Much easier to go out to an asteroid. https://en.wikipedia.org/wiki/OSIRIS-REx

Even faster than that! Meteors have a relative velocity between 11 and 71 km/s (40,000-255,000 kph). Anything faster than that would be interstellar, which is uncommon but not unheard of.

Pedantically, the lower limit of velocity relative to low-orbiting satellites is around 3 km/s. The 11 - 71 km/s figure is relative to the ground.

https://www.nasa.gov/mission_pages/stardust/mission/index-ae... (but that's for comets)

"What's the hard part here?" hahahaha

Give kerbal space program a shot. It teaches you hard lessons about this and others.

> What's the hard part here?

Physics

Catch it with what?

A big net, or a gigantic baseball glove.

Like this: https://en.wikipedia.org/wiki/CORONA_(satellite)#Recovery

I was thinking something more like this: https://en.wikipedia.org/wiki/Baseball_glove