Latest articles by Mike Wall
Could Dead Aliens Help Save Humanity?
It might take a dramatic extinction example to put us on the right path.
North Korea's Short-Range Missile Test Spotted from Space
Saturday's test was the first in 18 months by North Korea.
Could Life on Earth Have Come from Another Star System?
We may all be aliens whose home world orbits a distant star.
A Killer Asteroid Is Coming — We Don't Know When (So Let's Be Ready), Bill Nye Says
The good news is, we can do something about it.
X-37B Military Space Plane's Latest Mystery Mission Passes 600 Days
Exactly what it's doing up there is unclear.
The Most Distant Object Ever Explored Is Lumpy. And Astronomers Don't Know Why.
Ultima Thule is weird.
Life May Have Evolved Before Earth Finished Forming
The first organisms may have evolved before the rocky planets formed.
High-Altitude Auroras Create 'Speed Bumps' for Satellites
They help move pockets of air up where some spacecraft roam.
Israel's Beresheet Spacecraft Crashes Into Moon During Landing Attempt
Israel's first moon lander came up just short in its historic touchdown bid this afternoon (April 11).
Historic First Images of a Black Hole Show Einstein Was Right (Again)
Albert Einstein's towering genius is on display yet again.
Why This Poisonous Gas Could Be a Sign of Alien Life
Don't sleep on carbon monoxide, alien hunters.
Here's What NASA's Opportunity Rover Saw Before 'Lights Out'
There's a glorious panorama and a few sad thumbnails of a dark and dusty sky.
SpaceX Crew Dragon Splashes Down in Atlantic to Cap Historic Test Flight
Splashdown occurred at 8:45 a.m. EST about 230 miles off the Florida coast.
Israeli Moon Lander Snaps Epic Space Selfie with a Full Earth
The newly released photo shows the robotic lander, known as Beresheet, looking back at Earth from a distance of 23,363.5 miles (37,600 kilometers).
Weird 'Snowman-Pancake' Asteroid Gets Its Close-Up. And It Really Is an Oddball.
The best-ever photos of Ultima Thule have made it down to Earth, and they heighten the intrigue about the frigid and faraway world.
Why It'll Take Israel's Lunar Lander 8 Weeks to Get to the Moon
An Israeli moon lander just took to the skies, but we'll all have to wait nearly two months for its historic touchdown try.
A Brilliant Daytime Meteor Exploded Over Cuba This Month. Here's Where It Came From
Astronomers just got the goods on the meteor that flared up over Cuba earlier this month.
Meet Hippocamp: Neptune's Smallest Moon Has a Name (and a Violent Past)
A faint and frigid little moon doesn't have to go by "Neptune XIV" anymore.
Trump Signs Directive to Create a Military Space Force
The Space Force just took a big step from sci-fi-sounding dream toward reality.
Mars Rover Opportunity Is Dead After Record-Breaking 15 Years on Red Planet
One of the great exploration stories of our time is officially over.
Ultima Thule Beyond Pluto Is Flat Like a Pancake (and Not a Space Snowman After All)
The final photos that NASA's New Horizons spacecraft snapped of Ultima Thule during the probe's epic Jan. 1 flyby reveal the distant object to be much flatter than scientists had thought.
We Finally Know When Our Milky Way Will Crash Into the Andromeda Galaxy
The monster collision between our Milky Way and fellow spiral galaxy Andromeda will occur about 4.5 billion years from now, rather than in 3.9 billion years.
