New observations solve a 30-year-old puzzle of mysterious signals from around black holes.
Astronomers take a second look at UGC 1382 — previously considered a typical elliptical galaxy — and reassess everything they know about its size, age, and formation.
Some 200 of the mission’s surviving scientists and engineers and their families, along with many younger space explorers inspired by the Vikings, gathered to celebrate the 40th anniversary of the Viking 1 landing.
First spied last year, an object designated 2015 RR245 turns out to be one of the largest and most distant objects yet found orbiting the Sun.
A new Hubble Space Telescope image shows the very heart of the Crab Nebula, one of the most studied supernova remnants.
Abandoned for 25 years, a 12-meter antenna once used during the Cold War is now introducing astronomy students to the radio universe.
Astronomers have discovered a giant planet with an exceptionally wide orbit in a young system of three suns.
In its first — and final — month of flight, the Hitomi X-ray observatory measured the calm within the bubbling core of the Perseus Cluster.
Kepler-108 is the first system observed with really wonky orbits, which may be a result of giant planets bumping into each other.
After a 5-year-long journey, NASA's latest emissary to the largest planet in the solar system has arrived at its destination.
A recent glut of exoplanet research reveals the early chaos that helped shape planetary systems.
Spectral observations by NASA’s Dawn spacecraft reveal that the dwarf planet’s mysterious beacon is made of salt.
Sky & Telescope's astronomy podcast takes you on a guided tour of the night sky. In early evening look for Jupiter in the southwest, with Mars and Saturn embedded in Scorpius toward south.
The discovery of a chiral molecule in space has the potential to sort out one of the biggest mysteries in the chemistry of life.
Amateur astronomy has lost a dedicated observer and successful visual comet hunter.
A recently discovered asteroid plays leapfrog with Earth as they both orbit around the Sun.
Astronomers have reconstructed 18-century telescopes to observe sunspots and better understand solar cycles.
Former S&T editor Dennis di Cicco interviews several vendors about their newest products - watch and find out full details on new lines of astronomy equipment.
An innovative new meteor detection network will engage researchers and the public in a search for space rocks.
Light pollution is pervasive, and its impact on people is larger than you might think.
The gravitational wave observatory has detected a second event, heralding a new era in astrophysics. The day after Christmas last year, the cosmos quietly gifted scientists with gravitational waves — ripples in the fabric of spacetime – produced in a collision between two stellar-mass black holes. It’s the second event detected by physicists working with…
The winners of the 7th annual Earth & Sky Photo Contest highlight the fragile beauty of our heavens.
Astronomers may have solved the case of the Milky Way’s missing satellite galaxies. The solution? The galaxies never existed.
Celebrate the June 20th solstice, when the Sun and the full Strawberry Moon combine their powers to illuminate both day and night.
Astronomers have detected three cold gas clumps falling toward a galaxy's center — at odds with the prevailing idea for how black holes grow.