Have a look at www.geolsoc.org.uk/cosmicdust.
Have a look at this fascinating tour around the ISS by NASA
What’s six miles wide and can end civilisation in an instant? An asteroid — and there are lots of them out there.
Interesting short film on the objectives of the Hubble Telescope Is time travel possible?
Ever noticed that orange haze you get when looking at the sky at night?
Stellarium is a free open source planetarium for your computer.
In astronomy we often focus on the cosmos and observing the cosmos from here on Earth or by using unmanned space craft.