Due to the significant distance between us, detecting exoplanets outside our own galaxy is extremely difficult. However, these scientists investigated the planet M51-ULS-1 in the galaxy M51 by studying the light curves of its X-ray binaries.

Astrobiology
Astrobiology 101: Life, the Universe, and How We Search for Our Cosmic Neighbours
Look up at the night sky and it is difficult not to wonder: are we alone? Astrobiology turns that ancient
