B612 has been trying to do this for a long time, but is not yet successful. Their mission is to defend Earth against asteroid threads, starting with a telescope

B612 has been trying to do this for a long time, but is not yet successful. Their mission is to defend Earth against asteroid threads, starting with a telescope to detect them. https://en.wikipedia.org/wiki/B612_Foundation https://en.wikipedia.org/wiki/B612_Foundation