Dozens of satellites are busy day and night, beaming your favorite TV and radio programs from more than 35,000 miles away. Here's how to tune into them.
The planets are aligning! The week ahead will feature multiple planetary conjunctions at dawn and great views of Neptune and Triton at nightfall.
Two big, naked-eye sunspot groups are putting on a splendid show this week. We're also in the crosshairs for a strong geomagnetic storm and possible auroras.
Florence, one of the largest Earth-approaching asteroids, gets close enough to see in a small telescope this week and next. Here's how to find it.
Total eclipses have the power to touch us deeply and reverberate through our life in unexpected ways.
The upcoming total solar eclipse is understandably getting a lot of attention, but don't overlook the trusty Perseids. They'll be getting things warmed up Saturday night.
Sometimes it's better to start big and go small. Let the space station be your first step into the wider world of satellite watchin
Between the discovery of the new comet ASASSN1 and two stellar explosions, there's a lot happening in the sky this week. Take your telescope out and see what all the excitement's about.
Summer is perfect for bird-watching whether that be in the trees or among the stars of the Milky Way. We explore the celestial birds of the season.
At opposition this week and as bright as it will be for the next 190 years, it's time to find your way to Pluto, a frigid enigma at the edge of night.
Ah, full Moon. Time to put the telescope away and lead a normal life. Then again, maybe not. Here are 11 things to coax you back out for another look.
Meet Humboldt, a magnificent lunar crater compromised by its life on the edge.
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.
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.
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.
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.
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.
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.
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.
Another binocular comet? You better believe it. Comet Johnson takes center stage at nightfall this month and next.
Pollen's no friend of the allergy-prone, but there's an upside to your itchy eyes — weird and colorful coronas around the Moon and Sun.
A cosmic rabbit hole in the tail of Leo will take you to Abell 1367, a wonderland of galaxies more than 300 million light-years from Earth. Step in and lose yourself in the vastness.
The annual Lyrid meteor shower will add some pop and sizzle to Saturday's pre-dawn sky. With little interference from the Moon, conditions are ideal for meteor watching.
Get ready for 2014 JO25, the biggest asteroid to fly this close to Earth since 2004. Good news — even a 3-inch telescope will show it! Update: See below for a radar image and animation of 2014 JO25 captured by NASA's Goldstone Solar System Radar on April 18, 2017. Every week, a handful of new Earth-approaching asteroids…