Commercial space travel becomes more viable by the year, which means we should start thinking about healthy exercise protocols for passengers, especially when it comes to longer trips.
A young solar system does not just build planets from dust and gas. It can also be shaped by what happens nearby, including the death of a massive star. New research suggests that a supernova at the right distance could quietly change a planet’s ingredients from the start, and that this setup may be more common than scientists once assumed.