SUNSET: 
Explore the Night with Bob King
Wallow a While in the Lagoon Nebula
We take a dip in one of summer's finest nebulae and explore everything from spooky Bok globules to the tornadic Hourglass Nebula. Don't forget your snorkel, er, telescope! Sometimes a single deep-sky object becomes your whole universe. So it was for me when I took several deep wades in the…
Cosmic Relief with David Grinspoon
Can a Planet Think? The Gaia Hypothesis, Rethought
Humans have irrevocably changed the planet. Have those processes gone so far that Earth’s biosphere has begun to resemble a human brain?
Explore the Night with Bob King
Fireball May Have Dropped Meteorites in Ontario
A lime-green meteor as bright as the full Moon streaked across Canadian skies on July 24th and may have delivered free samples from the asteroid belt.
The Black Hole Files with Camille Carlisle
Galactic Center Gravity Test Confirmed
A second team of astronomers has now confirmed the light from a star passing near our galaxy’s central black hole behaved as predicted by Einstein’s theory of gravity.
Explore the Night with Bob King
Lonely Pluto Is More than a Speck
With Saturn pointing the way, it's easy to venture into the Kuiper Belt this summer and pay a visit to Pluto.
Astronomy in Space with David Dickinson
India Heads to the Moon With Chandrayaan 2
India enters the 21st-century race to the Moon with its Chandrayaan 2 mission.
Explore the Night with Bob King
Celebrate Apollo 11 with a Visit to Armstrong, Aldrin and Collins Craters
Find the craters named for the three astronauts who flew the first manned mission to land on the Moon.
Imaging Foundations with Richard Wright
How to Modify Your DSLR for Astrophotography
Modifying my DSLR camera was the smartest thing I could have done for my astrophotography. Here's why.
Explore the Night with Bob King
A Spoonful of Saturn to Sweeten the Night
Move over Jupiter, it's time for Saturn to shine! At opposition this week, the ringed planet is at its brightest and closest for the year.
Astronomy in Space with David Dickinson
A Strategy to Get the Mars Insight Lander Back in the Drilling Business
Insight's robotic arm has uncovered the lander's "mole," as NASA and German aerospace engineers work to get it drilling once again.
Explore the Night with Bob King
Where Have All the Comets Gone?
It seems like forever since a bright comet has come around. We look at current and future prospects.
Explore the Night with Bob King
See Southern Hemisphere Stars in This Journey to the Bottom of the Sky
How Low Can You Go? Journey to the Bottom of the Sky
Explore the Night with Bob King
Welcome Back, Milky Way!
Twilight's end brings the return of the summer Milky Way to the eastern sky. We unravel the anatomy of our home galaxy by teasing out the hidden structures within that glowing band.
Astronomy in Space with David Dickinson
Astronomers Might Have Found Apollo 10's "Snoopy" Module
A small near-Earth object might be a historic piece of space hardware: the Apollo 10 lunar module, dubbed "Snoopy."
Explore the Night with Bob King
Freaky Noctilucent Clouds Break Out All Over
Night-shining clouds made of ice and meteor smoke are on the increase. We explore their origins and how to see them.
Imaging Foundations with Richard Wright
Satellites, Begone! Remove Trails from Your Astrophotography
While the growing number of satellites above our heads is a concern, there are ways to mitigate their appearances in deep-sky astrophotography.
Explore the Night with Bob King
Jupiter Is Outstanding at Opposition
Prime-time Jupiter viewing kicks off this month when the planet reaches opposition on June 10th.
Astronomy in Space with David Dickinson
NICER Maps the X-ray Sky
NASA's NICER instrument aboard the International Space Station is giving us a unique view of much of the X-ray sky.
Cosmic Relief with David Grinspoon
One Small Step for Plantkind
With a seed germinated on the lunar farside, Earth’s biosphere made its first tentative foray into the cosmos.
Explore the Night with Bob King
SpaceX Launches First Volley of Starlink Satellites
The 60 Starlink satellites parading across the sky make an incredible sight, but some skywatchers wonder at what cost to the night.
