Use this telescope calculator to tell you how changing out eyepieces and accessories will affect your telescope's performance.
The waxing gibbous Moon is appears equally distant from Saturn, well to its right, and Altair, high to its upper left.
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.
The International Space Station passes over virtually all of Earth's populated areas, and you can spot it easily with your eyes alone — if you know where and when to look for it.
The International Space Station often passes close to the Moon, Sun, and naked-eye planets. Use this tool to plan viewing these close encounters.
Look low in the west in twilight for the waxing crescent Moon. It forms a triangle with Jupiter and Spica below it.
Inspired by his love of astronomy and struck by the unique ways in which the Game Boy Camera had been harnessed, Alex Pietrow took to the internet to see what photos of space it had taken. When he found none, he took his own.
The Great American Eclipse may be over, but there are some exciting places around the globe getting ready for their own dances with darkness.
The Milky Way runs from Sagittarius in the south, up and left across Aquila and the Summer Triangle very high in the east, and down through Cassiopeia to Perseus low in the north-northeast.
Total eclipses have the power to touch us deeply and reverberate through our life in unexpected ways.
Totality watchers get the best show, but a far greater number of people will be in partial eclipse territory. Here's how to make the most of it.
If you can't resist taking pictures of the solar eclipse with your smartphone, read this first for tips to ensure quality pictures.
A total eclipse of the Sun is a spectacular sight. With a little preparation and advance planning, you can capture your own souvenir portrait of this awe-inspiring sight.
A total solar eclipse offers the most spectacular of jewels, the diamond ring, as the Moon blocks all but a small part of the Sun's brilliance.
The Perseid meteor shower should be at its maximum late Friday and Saturday nights, August 11-12 and 12-13.
We've gathered some of the best pictures of past solar eclipses, total and partial, from our online photo gallery to serve as inspiration for your eclipse photography
For those photographing the August 21st eclipse, Fred Espenak shares his eclipse photography checklist.
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.
Learn how to make a travel-friendly solar projection viewer for your telescope — just in time for the eclipse! Each summer I have the privilege to run the Student Telescope Making Program at the Table Mountain Star Party (TMSP). Over the course of a few hours, students assemble telescopes and use them that night out…
Saturn glows in the south at nightfall. Fiery Antares, less bright, twinkles 13° to Saturn's lower right.
Wondering what you'll see during the total solar eclipse on August 21st? Use our all-sky maps to figure it out!
Two weeks before the much-awaited solar eclipse, the Moon clips Earth's umbra to create a partial lunar eclipse visible from the Eastern Hemisphere.
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
Look for these astronomical and Earthbound phenomena during the total solar eclipse on August 21st.
Due to alarming reports of potentially unsafe eclipse viewers as eclipse day approaches, the American Astronomical Society has revised its safety advice.