Exoplanetary System Found With 6 Worlds in Orbital Resonance

200 light-years away from Earth, there’s a K-type main-sequence star named TOI (TESS Object of Interest) 178. When Adrian Leleu, an astrophysicist at the Center for Space and Habitability of the University of Bern, observed it, it appeared to have two planets orbiting it at roughly the same distance. But that turned out to be …

If a Planet Has a Lot of Methane in its Atmosphere, Life is the Most Likely Cause

The ultra-powerful James Webb Space Telescope will launch soon. Once it’s deployed, and in position at the Earth-Sun Lagrange Point 2, it’ll begin work. One of its jobs is to examine the atmospheres of exoplanets and look for biosignatures. It should be simple, right? Just scan the atmosphere until you find oxygen, then close your …

In the Far Future, Stellar Flybys Will Completely Dismantle the Solar System

Consumption and disintegration. Next time you want to be the life of the party—if you’re hanging out with cool nerds that is—just drop that phrase into the conversation. And when they look at you quizzically, just say that’s the eventual fate of the Solar System. Then adjust your cravat and take another sip of your …

Meteorite Tells Us About Water on Mars 4.4 Billion Years Ago

Meteorites often offer terrific glimpses into worlds we are unable to otherwise access.  Sometimes those worlds are simply fragments of asteroids that didn’t burn up when they entered the atmosphere.  But sometimes, they come from the Moon or Mars.  Part of what makes these types of meteorites interesting is that they don’t necessarily come from …