In solar systems beyond our own, some moons might eventually collide with their host planets, new simulations suggest.
“Hot Jupiter” Is in a Possible Death Spiral
Kepler’s first exoplanet is migrating toward its star, an evolved subgiant that is much bigger than first thought.
Extremeness of Seasons Determined by Planetary Motion Parameters
We’ve long known that a planet’s orbital period and tilt determine length and intensity of seasons. We now see rotation rate matters too: max temperature shifts poleward as rotation slows.
Massive Stars May Commit Grand Theft Planet
New simulations show that planets around young, massive stars may have been captured or stolen rather than homegrown.
Pulsar Planets Are Exceedingly Rare
A new survey of hundreds of pulsars could help solve the mystery of why planets exist around these dead stars.
The First Look at Our New Astronomy Paradigm
Five galaxies, two nebulae, an exoplanet, and the early universe—JWST’s first images provide a cross section of the science yet to come.
Coronal Dimmings Shine Light on Stellar CMEs
Coronal mass ejections from stars have eluded easy observation, so scientists are looking at what’s left behind.
Giant Planet’s Formation Caught in Action
Astronomers took a direct image of a massive protoplanet embedded in a protoplanetary disk. The system provides strong evidence for an as-yet-unconfirmed theory of planet formation.
At-Home Astronomers Help Discover a New, Unique Exoplanet
Amateur astronomers sifting through NASA’s public data uncovered a long-orbit gas giant that could help scientists understand how these planets form.
Tidally Locked and Loaded with Questions
Tidally locked planets always present the same face to their host stars. What does this mean for their potential to support life?