"The extent of the tail is gargantuan, stretching up to 9 million kilometers [5.6 million miles] long," said MIT astronomer ...

The astronomers spotted the planet using NASA's Transiting Exoplanet Survey Satellite (TESS), an MIT-led mission that ...

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies these rocky, or "terrestrial," worlds are far more common than was ...

Astronomers have discovered an Earth-size planet orbiting an ultracool red dwarf star similar in size to Jupiter. The red dwarf, located some 55 light-years away, is 100 times less bright than the ...

Among the planets in our solar system, Earth stands out not just for its life-supporting capabilities but also for its unique name. Unlike its celestial neighbors—Mercury, Venus, Mars ...

This approach could ultimately provide answers to some heavily debated topics, such as the existence of a "hot Neptune desert," which refers to the strange scarcity of Neptune-size planets in ...

The search for Earth-like exoplanets—planets orbiting stars other than our sun—is a central topic in today's planetary research, because extraterrestrial life is most likely to be found there ...