NASA's Hubble Space Telescope observed a giant comet set to approach Earth this July that could be more easily seen using a telescope. The cosmic event comes amid a new study that found a roaming star could one day cause tens of millions of comet to rain down in our Solar System.
In over a million years, the star Gliese 710 will reach the edge of our Solar System, disturbing comets in the Oort Cloud. That could be bad news for Earth.