Using Event Horizon Telescope observations of M87's black hole from 2017, 2018 and 2021, "astronomers have found some changes in this now iconic image that could be caused by variations in the ...

Of the thousands of single-star systems in our galaxy, around 10% are known to have planets. Scientists thus expected about ...

WASHINGTON — Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that formed beyond the orbits of its gaseous neighbors, possibly after ...

A large volcano in Hawaii began erupting on Sunday afternoon, sending fiery fountains of lava and hot ash high into the sky. The U.S.

Astronomers watched a massive star in the Andromeda Galaxy vanish over a decade, providing rare evidence of a "failed supernova" forming a black hole without exploding.

It's well established that the universe is expanding, but there's serious disagreement among scientists over how fast it's ...

Now Lawrence, a community organizer with the group Kāko‘o Haleakalā, is gearing up for another fight as the U.S. Air Force outlines plans to build up to seven more telescopes on the summit, even ...

The planetary system, located 120 light-years away, features four worlds orbiting a red dwarf star and challenges classical formation schemes.

Astronomers tracked a star in Andromeda as it dimmed and vanished without the usual fiery explosion, offering rare clues to how black holes form.

Now researchers think they've solved the mystery of one of the longest star-dimming events ever recorded. The star, called ...

Only 11.4 light-years away, two exoplanets have been detected around a neighboring star. One of them, Gl725Bc, is located in the habitable zone and is now the second closest potentially ...

Hawaiʻi Island’s largest astronomy education program, Journey Through the Universe, hosted its 22nd year of classroom visits, career panels, and community events in Hilo last week.