Astronomers Spot First-Known Interstellar "Comet"
Telescopes only picked it up a week ago, but it's likely been traveling through interstellar space for millions of years.
Astronomers Catch Gravitational Waves from Colliding Neutron Stars
Spacetime ripples from the neutron star smash-up usher in the age of multi-messenger astronomy.
Millions of Americans Viewed August Solar Eclipse
The 2017 solar eclipse could easily be the most watched event in US history. Can we learn something from it?
Hawai'i Gives Go-Ahead to Thirty Meter Telescope
After protests and a judge's ruling brought the colossal Thirty Meter Telescope project to a halt, a state panel has cleared the way for its construction atop Mauna Kea to proceed.
Supermassive Black Holes Discovered in Close Tango
Astronomers have found what could be the closest known pair of supermassive black holes detected via direct imaging, orbiting each other only a light-year apart.
As Cassini Takes Its Final Plunge, What Will We Learn?
As Cassini dives into Saturn's atmosphere this Friday, ending 13 years of exploration, expect to probe the ringed planet's mysteries as never before.
Cheers to 40 Years! Voyagers 1 and 2 Going Strong
Scientists and astronomy enthusiasts are coming together to celebrate two spacecraft, billions of miles beyond Earth, as they head for the stars.
After Totality: Eclipse Reactions Video
On August 21, 2017, a total solar eclipse cast its shadow across the US. Sky & Telescope was there, and we captured some of your eclipse reactions.
Total Eclipse vs Solar Power
In addition to clogged roads and crowded hotels, the 2017 solar eclipse had another big effect on U.S. infrastructure: reduced solar power production.
How Will the Sun's Corona Look at Totality?
Updated 8/16 to include Predictive Science, Inc.'s predictions. The total solar eclipse is less than three weeks away, but researchers already have a good indication of how the Sun’s corona will look when it comes into view.
Explore the Night with Bob King
Will Monday's Total Eclipse Change Your Life?
Total eclipses have the power to touch us deeply and reverberate through our life in unexpected ways.
10 Things You Might Forget You Need on Eclipse Day
So you think you’re prepared for your eclipse viewing experience. But may I submit, dear reader, that you might have forgotten to pack a few things...
Chasing the Total Solar Eclipse From Orbit
While millions will watch the August 21 total solar eclipse from the ground, International Space Station crew will have an amazing view high from overhead.
What Kind of Solar Eclipse Will You See?
From the makers of SkySafari comes an eclipse widget that lets you see the circumstances of the August 21st solar eclipse for any location.
Astronomy in Space with David Dickinson
Breakthrough Starshot Takes to Space
Six Sprites, "the world's smallest spacecraft" have entered low-Earth orbit, a small milestone for Breakthrough Starshot's plan for interstellar voyage.
Buzz Aldrin, Moonwalker and Eclipsophile, Saw Totality Twice from Space
Buzz Aldrin experienced totality twice in space — once on Gemini XII, then on Apollo 11. Next up: Idaho.
Still Making Eclipse Travel Plans? Camping Might be the Answer
Think the total solar eclipse is "sold out"? Think again — and grab your camping gear. Private campsites and RV parks within the long path of totality are still available for those willing to travel.
Is Our Sun Slowing Down in Its Middle Age?
The Sun, now halfway through its life, might be slowing its magnetic activity, which could lead to permanent changes in the sunspots and auroras we see.
New Satellite "Mayak" Might Light Up the Sky
Russia's first crowd-funded satellite, named Mayak (Russian for "beacon of light"), promises to be the “brightest object in the night sky next to the Moon.”
100 Billion Brown Dwarfs in the Milky Way?
A new study of a nearby cluster of newly formed stars reveals that brown dwarfs may rival stars in the Milky Way in number, with one brown dwarf for every two bona fide stars.