... An artificial comet holds secrets to Earths life . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Red-burning galaxies hold the key to galaxy evolution . ... The key areas for understanding how environment shaped galaxy evolution in the past universe may be where red-burning galaxies are most numerous in small groups on the outskirts of the rich cluster rather than within it. ...