SUNSET: 
Astronomy in Space with David Dickinson
Half-ton OGO 1 Spacecraft Set to Reenter
NASA's Orbiting Geophysical Observatory 1, a bus-sized relic of the early Space Age, is set to reenter in the coming week.
Explore the Night with Bob King
Take a Roller Coaster Ride with Algol, a Fast Eclipsing Binary
How would you like to see a star drop two magnitudes in the time it takes to eat dinner? Easy to do. Just check out one of these fast eclipsing binaries — they'll make your head spin.
Astronomy in Space with David Dickinson
Iconic Arecibo Radio Dish Damaged
A broken support cable at the Arecibo radio observatory brings operations to a halt.
Imaging Foundations with Richard Wright
The Scientific Value of "Pretty Pictures"
Even processed images still contain data that's of scientific value.
Explore the Night with Bob King
Perseids Peak August 11–12 — Get Ready for the Show
The Perseid meteor shower is like no other. Every August it delivers up to 100 meteors an hour in pleasant weather conducive to getting outside and staying up late. What's more, most kids still aren't in school, making it possible for the entire family to enjoy the event.
Astronomy in Space with David Dickinson
Potential New Targets for Japan's Hayabusa 2 Mission
The Hayabusa 2 team has laid out a proposal for an extended mission to one of two asteroids after the spacecraft's sample return this December.
Astronomy in Space with David Dickinson
NASA Launches Perseverance Rover for Mars
NASA’s Perseverance rover heads to the Red Planet.
Explore the Night with Bob King
Cool Off with Pluto This Summer
Pluto might be a challenging target but it's well worth the effort. Grab your telescope and see if you can spot this distant, chilly world.
Astronomy in Space with David Dickinson
China Launches Tianwen 1 Mars Mission
China launches its first Marsbound mission, Tianwen 1, which carries an ambitious orbiter, lander, and rover package.
Astronomy in Space with David Dickinson
United Arab Emirates Launches Mars Hope Orbiter
United Arab Emirates joins the "planetary space club" with an ambitious mission to Mars.
Explore the Night with Bob King
Comet NEOWISE Dazzles at Dusk
Comet NEOWISE has captivated skywatchers with its stunning tail. Now that it's moved into the evening sky and climbing higher each night even more people will get a chance to see it.
Imaging Foundations with Richard Wright
Catch A Shooting Star (with Your Camera)
Catching a falling star is easier than you think . . . when you use a camera!
Explore the Night with Bob King
Comet NEOWISE Delights at Dawn
Skywatchers are treated to a naked-eye comet as NEOWISE emerges into the the dawn sky.
Astronomy in Space with David Dickinson
Amateur Astronomer Discovers "Clyde's Spot" on Jupiter
The discovery of a new feature on Jupiter gave NASA’s Juno mission an opportunity to image an emerging storm up close.
Explore the Night with Bob King
Two Bright Supernovae Light Up Nearby Galaxies
Two bright new supernovae — 2020nlb in M85 and 2020nvb in NGC 4457 — are now within the range of amateur telescopes in the western sky at nightfall.
Explore the Night with Bob King
Anticipation Grows for Comets NEOWISE and Lemmon
Two comets spark excitement for the coming week — NEOWISE might reach naked-eye visibility at dawn, while Lemmon will be visible in binoculars at dusk.
Astronomy in Space with David Dickinson
NASA to Use Pulsar Navigation for Deep Space Missions
NICER and SEXTANT demonstrate XNAV pulsar navigation system that may be used on Artemis.
The Black Hole Files with Camille Carlisle
Black Hole Collision May Have Caused Burst of Light
Astronomers think they’ve detected a flash created by the merger of two black holes.
The Black Hole Files with Camille Carlisle
Gravitational Wave Detectors Find Mystery “Mass Gap” Object
Astronomers have caught a black hole colliding with a mysterious companion that might be either one of the most massive neutron stars or the smallest black hole ever detected.
Explore the Night with Bob King
Nights of Noctilucent Clouds
Noctilucent clouds shimmer high in the sky during summer twilight at northerly latitudes.
