Some argue that it’s safer, cheaper, and better for science if robots take the place of astronauts.
A global collaboration of 300 scientists unveils the second-ever picture of a black hole, the Milky Way’s own supermassive Sagittarius A*.
An astrobiologist explains why a meteor from Mars changed planetary science. Plus, why samples from the Perseverance rover will be key to understanding the Red Planet.
This spring, The SciFri Book Club team is gathering to explore this season’s Book Club pick, ‘The Sirens of Mars.’