The curious minds at What If investigate Earth orbiting the Sun at the speed of light, exploring the impossible physics and ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a new ...

Scientists have pulled back the curtain on one of the most extreme solar regions seen in decades, tracking it almost nonstop ...

Some astronomers have made it their life’s work to find “Earth 2.0,” a rocky planet orbiting a star just like our own Sun. It ...

The largest rainbowlike feature ever observed in the solar system was just captured by a newly launched spacecraft, as NASA scientists work to better understand the sun and forecast space weather.

Astronomers have directly observed a free-floating planet, comparable in mass to Earth, roaming the Milky Way. Discovered via gravitational microlensing due to its brief light curve, this rogue world ...

The term "perihelion" describes the point in an astronomical body's orbit where it is nearest to the sun. Derived from the Greek words peri (around) and helios (sun), the word reflects its meaning. In ...