The Mars 2020 rover reached a third crucial milestone this past week on the path to the launch pad.
Now you see 'em, now you don't. Watch the Moon occult Neptune and nearby Lambda Aquarii on the same night.
Take an imaginary journey in a boat down the Milky Way's Great Rift, exploring rich star clouds and dark nebulae along the way.
A survey of free services and apps that let you keep tabs on space weather so you can anticipate the next great aurora.
After a 5-year-long journey, NASA's latest emissary to the largest planet in the solar system has arrived at its destination.
Few amateurs have looked through a telescope and not imagined what it would be like to take a photo of the target in the eyepiece. I know I did when I got my first telescope. But back then, astrophotography was practically a black art: 35mm film was the only medium of choice, and it required…
Late June offers a grab bag of clusters and nebulae "lined up" at the midnight hour. Time your southern deep-sky viewing with meridian passage and you'll be a happy camper.
A modest proposal: the golden spike that marked the beginning of the Anthropocene was the first lunar landing in Mare Tranquilitatis.
A recently discovered asteroid plays leapfrog with Earth as they both orbit around the Sun.
Take a trip down the rabbit hole to the weird and weighty world of planet-sized white dwarf stars.
An innovative new meteor detection network will engage researchers and the public in a search for space rocks.
Celebrate the June 20th solstice, when the Sun and the full Strawberry Moon combine their powers to illuminate both day and night.
First science results from ESA's LISA Pathfinder mission exceed expectations, with five times the sensitivity. This result paves the way for a future full-scale gravitational wave observatory in space.
Supernovae are popping up everywhere! Two stars flamed out millions of years ago and at least one is an easy catch right now in amateur telescopes.
ISS astronauts are reviving our passion for space travel in novel ways.
It's showtime for the King of the Rings! Time to get your telescope out to see and share Saturn, which comes to opposition this week.
Antares and Betelgeuse may be colossal stars, but we take it to the next level of stellar monstrosity with a visit to UY Scuti, a star that makes our Sun seem no bigger than a pinpoint.
The orbiting science laboratory begins a series of marathon passes this week that favor the northern hemisphere.
Let Mars be your guide to no fewer than 15 diverse and delightful double stars that pepper its path through Scorpius and Libra this opposition season.
The European Space Agency is opting to send its first rover to the Red Planet two years later than originally planned.
An old friend from winter returns for an encore in the morning sky. Already visible in binoculars, Comet PanSTARRS (C/2013 X1) may reach naked-eye visibility in June.
Mind your elders the next clear night and pay a visit to some of Spring's biggest and most ancient planetary nebulae.
Russia's Mikhailo Lomonosov observatory takes to the skies on the hunt for gamma-ray bursts, cosmic rays, and near-Earth asteroids.
Planning a sidewalk stargazing event? Here are a few suggestions to make sure people walk away smiling.
The Japanese space agency JAXA has released a timeline covering the Hitomi space observatory's failure last month. Salvage efforts continue but recovery appears unlikely.