SUNSET: 
Astronomy in Space with David Dickinson
Curiosity Sees Phobos Transit . . . After Sunset
NASA's Curiosity rover just spied transits of both Martian moons across the face of the Sun — including one that happened after the Sun had set.
The Black Hole Files with Camille Carlisle
Could Dark Matter Be Black Holes?
Astronomers are reconsidering primordial black holes as an answer to the invisible matter mystery, but recent observations disfavor at least some sizes of black hole.
Explore the Night with Bob King
Twinkle, Twinkle Quasi-Star — 12 Quasars for Spring Evenings
Quasars are among the brightest and most distant objects in the universe. Many are visible in amateur scopes if you know just where to look. We'll help you track them down.
Explore the Night with Bob King
Pop in on Pallas and Iris Tonight
Break out your binoculars or telescope the next clear night for a peek at the bright asteroids Pallas and Iris, both at opposition this spring.
Astronomy in Space with David Dickinson
Quaking Aspen Leaves Inspire Potential Power Source For Mars Rovers
A unique concept could serve as an emergency power backup for future missions.
Explore the Night with Bob King
Amazing Images Capture Giant Fireball Exploding Over the Bering Sea
A powerful fireball exploded over the wilds of eastern Russia last December. Satellites captured the whole thing.
Explore the Night with Bob King
It's Spring! Time to Visit the Bright Galaxies of Leo I
Springtime is galaxy time. Only 30 million light years away, the Leo I Group and nearby Leo Triplet entice the eye with an assortment of bright spiral and elliptical galaxies. Welcome to spring! The new season begins (or began depending on when you read this) at 5:58 p.m. EDT on…
Imaging Foundations with Richard Wright
Astro-Imaging: Don't Throw A FITs, Man!
The FITS file is so much more than just an image format. If you're looking to get serious about deep-sky astrophotography, here's what FITS can offer you.
Cosmic Relief with David Grinspoon
Sudden Impact: What Greenland's Crater Means for Our Planet's History
The discovery of a recent huge meteor crater beneath Greenland’s ice sheet has reignited a debate over cosmic influences.
Astronomy in Space with David Dickinson
NASA 2020 Budget Proposal Boosts Exploration, Downplays Science
NASA's Lunar Gateway and a return to the Moon are the big winners in the 2020 budget proposed for the agency; the futures of planetary and Earth science are less clear.
Explore the Night with Bob King
Deep-sky Hunting in Cancer, the Crab
As winter melts into spring, we sample both familiar and overlooked deep-sky treasures in the "empty space" between Gemini and Leo, home of the Crab.
Astronomy in Space with David Dickinson
Mars Insight's "Mole" Hits a Snag
Drilling operations for NASA's Mars Insight Lander have been put on hold as the "mole" has hit unexpected obstacles.
Explore the Night with Bob King
How to See Sirius in the Daytime
Spotting Sirius in broad daylight may be easier than you think! Here's how to do it.
Explore the Night with Bob King
A Zodiac Ramble . . . with a Few Fun Detours
Take a trip along the ecliptic from dusk till dawn to check out the sights along this well-traveled highway — the zodiacal light, Mercury, and the gegenschein, plus scenic detours to a comet and asteroid.
Explore the Night with Bob King
Right Ascension & Declination: Celestial Coordinates for Beginners
Once you hold the golden keys of right ascension and declination, finding your way around the sky is almost as easy as finding your way around town.
Astronomy in Space with David Dickinson
Israeli Lunar Lander Heads to the Moon
Israel's Beresheet lunar lander was carried to space today on top of a Falcon 9 rocket, headed for a soft landing on the Moon in April.
Explore the Night with Bob King
Deep-Sky Observing Without Equipment, Part II — The Winter Sky
Really want to see what your eyes can do? Leave the telescope at home and join me for a naked-eye tour of the late winter sky.
Astronomy in Space with David Dickinson
NASA to Explore Early Universe, Origins of Life with SPHEREX
The SPHEREX mission will create multiple surveys of the near-infrared sky that will reveal the origins of life and perhaps the universe itself.
Imaging Foundations with Richard Wright
Astro-Imaging: Stretching the Truth
There's more than one way to stretch your data . . . and the truth.
Astronomy in Space with David Dickinson
Opportunity Reaches the End of Its Long Road
Despite months of listening, NASA has failed to pick up any signals from the stalwart Opportunity rover.
