Newly-discovered asteroid 2018 CB will be passing only about 44,000 miles away Friday and visible in modest telescopes.
The launch of the Humanity Star has some fuming, others smiling, at the prospect of seeing a bright, new satellite. What do you think?
60 year ago today, a small satellite ushered in the U.S. space program in a big way.
An unusual dawn total lunar eclipse presents special challenges and great photo opportunities. Here's what you need to know to make the most of it.
The Kilopower fission reactor will offer a more efficient and more powerful portable power source for solar system exploration.
They look like leftover gravel from a freshly laid asphalt road, but the black stones that spattered across the snow in the wake of the January 16th Michigan fireball were anything but terrestrial. They belonged to a tiny asteroid on a recent foray to the outer asteroid belt but now grounded for good on Earth.…
Mira, one of the easiest-to-observe pulsating variable stars, reaches peak brightness this month. Don't be shy, come look her in the eye.
Knowing your astrophotography setup's pixel scale will help you take better pictures. And to determine pixel scale, you first need to know your field of view.
We look ahead to see what fuzzy visitors, new and returning, will brighten the nights ahead. One and possibly two naked-eye comets are on the way.
The new year opens with the magnificent pairing of the solar system's largest planet with one of its smallest.
The next year will see space missions headed for Mars, Mercury, the Sun, and more. Asteroid rendezvous, exoplanet discoveries, and a Mars landing await.
NASA has selected two finalists for consideration as the next New Frontiers mission: a comet sample return and a flying drone for Titan.
The Local Group galaxies and their kin are the building blocks of the most magnificent galaxies in the universe. Let them inspire your winter nights.
A slender Moon is an beautiful and inspiring sight. December and January offer several opportunities to see these exceptional crescents.
Mark the date: December 13th. That's the night the Geminid meteor shower peaks. Highlighted by the return of its parent asteroid 3200 Phaethon, this year's show promises to be one of the best ever.
Good weather for imaging is about more than just the clouds! Even if it's cloud-free, you'll need to understand if the seeing and transparency are good.
Astronomers have discovered a supermassive black hole scarfing down gas just 690 million years after the Big Bang.
NASA engineers directed the historic spacecraft Voyager 1 to fire its backup thrusters for the first time in 37 years.
A team of astronomers has found signs of small stars forming within a few light-years of the Milky Way’s central black hole.
The parent asteroid of next month's Geminid meteor shower, 3200 Phaethon, is about to make a historically close flyby. Get ready to watch it race across the sky.
With exoplanet Ross 128b in the news, we pay a visit to the star that sustains this potentially habitable exoplanet.
NASA is developing a key instrument for a mission to the Martian moons, Phobos and Deimos.
LIGO has detected another black hole merger, raising the tally to five.
A suborbital launch from Wallops Flight Facility tested a critical piece of landing hardware for the Mars 2020 rover.
Pisces, that sprawling constellation of faint stars easy to ignore, holds a treasure trove of double stars for small telescopes.