Meet Humboldt, a magnificent lunar crater compromised by its life on the edge.
Following the release of the 2018 budget, the space agency has ordered an “orderly closeout” for the Asteroid Redirect program.
We examine the fascinating solar phenomena that anyone with a small scope and safe solar filter can see, whether the Sun's in eclipse or not.
China's Hard X-ray Modulation Telescope (HXMT) headed to orbit this past weekend.
Saturn, considered by many the most beautiful sight in the sky, comes to opposition this week with its rings in full tilt. You won't want to miss it.
Xenon measured by the European Space Agency's Rosetta spacecraft has shed light on a long-standing mystery about the role comets played in Earth's formation.
Astronomers announce the discovery of bloated gas giant KELT-9b, the hottest "hot Jupiter" exoplanet known orbiting a short-lived massive star.
Stars leave interesting messes after they die: diamond-studded puffballs, neutron stars, and black holes. We explore an example of each in June's night skies.
When shooting with digital cameras, images will appear very dark and low-contrast. This is true with daytime photographs as well as long-exposure deep-sky images. That’s because raw data is linear. To make details visible, we must apply a non-linear transformation and s – t – r – e – t – c – h the…
Following an occultation of Rho Leonis by the Moon, watch Venus and Uranus pair up in a weekend conjunction just 10° from Comet ER61 PanSTARRS.
The European Space Agency has released its investigation into the crash of the Schiaparelli Mars lander in October 2016.
Flash! A comet or asteroid fragment whacked Jupiter on May 26th. It's the sixth time that observers on Earth have witnessed an impact on the giant planet.
From its dynamic atmosphere to its hidden depths, the Juno spacecraft has Jupiter as never before — surprising NASA scientists with unexpected complexity.
Stay up late and you'll see the return of one of the sky's most familiar asterisms, the Summer Triangle. Firefly nights under the arch of the summertime Milky Way will soon be here.
Once more, NASA leaves our sister planet out of the mix of new missions. Ouch.
The Red Planet has inspired a long history of brilliant mistakes.
Traveling through space can be a bumpy ride! Join Govert Schilling on a scenic road trip across southern Africa filled with craters and meteorites.
Chandeliers of the galaxy, these distant stellar swarms fire our sense of wonder. Hop on and we'll tour 16 of season's finest!
A brand new supernova in NGC 6946 is bright enough to see in modest-sized telescopes. Here's how to find it.
Sky & Telescope's third tour to this astronomical paradise in South America wowed its participants day and night. Here's what they saw!
Large asteroid 2014 JO25 cruised past Earth on April 19, and Goldstone and Arecibo radars were at the ready to capture what turned out to be yet another twin-lobed asteroid.
Another binocular comet? You better believe it. Comet Johnson takes center stage at nightfall this month and next.
The Grand Finale is underway, as NASA's Cassini spacecraft sails through a clear gap between Saturn and its rings.
Find out how to remove light pollution from your astrophotos so you can have dark skies instead of red-brown ones.
Cassini's Grand Finale has begun, as the spacecraft threaded the needle between Saturn and its rings, following several fantastic moon passes and a final glance back at Earth.