Conserving Water on the TRAPPIST-1 planets

Conserving Water on the TRAPPIST-1 planets

Three more potentially habitable planets that are also relatively nearby have been discovered! If they are really in their habitable zone, they should have water today, but only if they did not lose it all early on in their lifetimes. Could any of these planets have retained their water supply?

How do M-dwarf Stars Measure Up?

How do M-dwarf Stars Measure Up?

Very low-mass M-dwarfs are a missing link in our theory of stellar interiors. Stars this small probably have fully convective interiors, but we don’t have a complete understanding of how that affects global properties like radius or temperature. It’s important to get right, if for no other reason because lots of exoplanets orbit M-dwarfs.

Cool Stars Have Magnetic Fields Too

Cool Stars Have Magnetic Fields Too

While the Sun is an excellent starting point in a quest to understand magnetism, the authors of today’s paper want more. They take advantage of something only relatively cool stars can have in their atmospheres to study magnetic fields: molecules in starspots.