The hunt for worlds beyond our solar system has shifted from counting planets to confronting extremes that strain basic ...

This year, the number of NASA-tracked confirmed worlds discovered beyond our solar system surpassed 6,000, and several thousand more await confirmation. The growing tally reflects how dramatically ...

At the beginning of the exoplanet age, the goals were fairly simple. The first was to find as many of them as possible to ...

Exoplanets are planets outside Earth's solar system. In 1995, a gas giant named 51 Pegasi b, which orbits a star similar to Earth's sun, etched its name in history as the first exoplanet ever ...

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown.