This new James Webb Space Telescope image shows the galaxy cluster MACS J1149.5+2223, or MACS J1149…
Category: Earth Sky
Giant gas cloud holds mysterious object, astronomers say
View larger. | Artist’s concept of a large disk of debris, surrounded by a thick cloud…
Voyager 2 met Uranus 40 years ago
Voyager 2 met our sun’s 7th planet, Uranus, on January 24, 1986. Afterwards, as Voyager sped…
Milky Way’s central black hole erupted surprisingly recently
This is Sagittarius A* (pronounced Sagittarius A-star), the supermassive black hole at the center of our…
New sungrazing comet officially named. See maps here!
This is the new sungrazing comet C/2026 A1 (MAPS). Image via Gerald Rhemann and Michael Jäger.…
Powerful magnetic fields on super-Earths could boost chances of life
View larger. | This is an artist’s concept of a super-Earth with a deep magma ocean…
New survey of nearest stars reveals best spots for life
View larger. | This is an artist’s concept of Kepler-186f, an Earth-sized exoplanet about 500 light-years…
Could aliens and fireflies communicate in the same way?
View at EarthSky Community Photos. | Garth Battista captured this scene of fireflies in the Catskill…
Europa’s ocean ‘quiet and lifeless,’ new research suggests
View larger. | Jupiter’s ocean moon Europa is one of the most promising places to search…
SETI@home takes a closer look at 100 notable signals
A screenshot of the SETI@home user interface on a desktop computer in 2009. The software ran…