Astronomers have discovered a giant cosmic void that explains why our Local Group of galaxies is moving through the universe as fast as it is.
Astronomers suspect the Sun’s closest stellar neighbor desiccated its potentially rocky exoplanet, destroying the planet’s chances for habitability.
Astronomers have discovered an object in the active galaxy Cygnus A that wasn’t there before.
Astronomers have combined data from the Voyager spacecraft and the Hubble Space Telescope to probe the stuff between the stars.
In our March 2017 issue we included a diagram of all small, confirmed exoplanets in their stars’ habitable zones. Here’s the saga of how we decided which planets to put on that list.
Astronomers suspect that a binary star system in Cygnus is preparing to make one star of two, erupting in a red nova visible to the naked eye.
What’s inside a black hole? Wormholes? Alternate universes? If you fell into a black hole, only one thing’s for sure: its tidal forces would kill you.
Learn what a black hole is, what we mean by “singularity” and “ergosphere,” and why we think black holes are real.
Curiosity scientists have tracked Gale Crater’s changing environment as it became more, then less, acidic over millions of years. Microbial life could have survived in these conditions.
Planetary scientists have pinpointed the size of a near-Earth asteroid to be a mere 2 meters, one of the smallest ever characterized.
For the first time, astronomers have discovered a (potential) high-energy counterpart to a fast radio burst, and also used a different burst to probe the cosmic web.
NASA’s youngest Mars orbiter has watched clouds grow and detected an ozone accumulation on the Red Planet.
Observations from NASA’s Lunar Reconnaissance Orbiter reveal that the Moon is being pockmarked by meteoroids at a higher rate that previously predicted.
Sky & Telescope has put together a digest of active missions in 2017. We’ve included astrophysics, planetary, gravity, solar, space weather, and stellar projects.
Observations confirm that the closest star to our solar system has a regular magnetic cycle similar to our Sun.
A new analysis suggests that a subsurface ocean might lie deep beneath the crust of Saturn’s moon Dione.
A new e-digest from the International Astronomical Union’s Minor Planet Center gives the public a head’s up on passing asteroids.
Astronomers have found a unique trait of spiral arms that supports a longstanding idea about where these patterns come from.
Astronomers have discovered a planet in the habitable zone of the closest star to the Sun.
Living in voids might be tangentially responsible for three small galaxies’ recent flurries of starbirth.
Cassini radar observations reveal a channel system on Saturn’s biggest moon, Titan, that is drowned in liquid methane.
An intergalactic cloud has slammed into the Milky Way Galaxy and left a big hole.
The dwarf planet has a paucity of big pockmarks because it has somehow erased them.
Astronomers have discovered a giant planet with an exceptionally wide orbit in a young system of three suns.
Spectral observations by NASA’s Dawn spacecraft reveal that the dwarf planet’s mysterious beacon is made of salt.