How to Weigh a Galaxy
Hint: Consult its neighbors.
Astronomy’s Bat Signal
When a rare cosmic neutrino hit the South Pole, alarms around the world went off.
A Double-Headed Mustang Flies Again
Restoring a rare XP-82.
A New Exhibition of Rarely Seen Astronomical Lithographs
E.L. Trouvelot's 150-year-old images are going on display in California this April
It Came From Another Galaxy
A peculiar, cigar-shaped asteroid turned out to be an interstellar visitor.
12 <em>Air & Space</em> Stories from 2017 You Need to Read
Some of our favorite space and aviation stories from the last year.
Just How Do You Get a Smallsat into Orbit?
NPR’s Planet Money podcast documents the journey of a cubesat from design to launch.
Gravitational Wave Astronomy Just Became a Team Sport
Observatories followed a ripple in space-time to its source
“Go” for Restoration
Apollo’s mission control is getting revived.
The Master of Air-to-Air Photography
Katsuhiko Tokunaga’s unparalleled images of airplanes in flight.
A Brand New U.S. Weather Service Joined the Race in 1878 to Observe a Solar Eclipse
The event gave the American scientific community a chance to prove themselves. A new book tells the story.
Giant Drone Racing, Swooping Get More Legit
See the swoopers compete for their first FAI title in August.
The Making of Eclipse City
Where totality crosses the planet, whole cities rise up from nothing for a day.
In Case of Eclipse, You Have 2 Minutes and 40 Seconds to Get the Picture Right
A new book describes eclipse-watchers through history, and how many of them tried to document totality.
12 <i>Air & Space</i> Stories From 2016 You Need To Read
Some of our favorite aviation and space stories of the year.
Tiny Adorable Bird Goggles Allow Innovative Study of Flight
Stanford engineers wanted to measure lift forces, but first they had to protect their avian partner’s eyes.
Pluto, So Far
New Horizons has finally sent down all its data from the fly-by. What have we learned about the far-away dwarf planet system?
Look What Lindbergh Left Inside the <i>Spirit of St. Louis</i>
Ninety years later, a restoration team makes an unexpected find.
What Would You Have Put on Voyager’s Golden Record?
An author puts together his own “Earthling mixtape” in a new book.