Explore the vast reaches of space and mankind’s continuing efforts to conquer the stars, including theories such as the Big Bang, the International Space Station, plus what the future holds for space travel and exploration.
Scientists Want You to Say 'UAPs', Not 'UFOs'
The Zoo Hypothesis: Are Aliens Watching Us Like Animals in a Zoo?
Are Pentagon-confirmed UFOs a National Security Threat?
Surprise! The Big Dipper Is an Asterism, Not a Constellation
Why March's Full Moon Is the Worm Moon
Why Does Earth Spin?
Scientists Make History by Growing Plants in Soil From Moon
Without Regulation, the Night Sky Will Be Twinkling With Satellites, Not Stars
Space Architects Will Help Us Live and Work Among the Stars
SpaceX's Massive Starship Could Soon Transform Spaceflight
Is Coastal Georgia the Next Gateway to Space?
Is Space Tourism Worth It?
What Does a Science Communicator Do?
What Is the Coldest Place in the Universe?
2022 Was NASA's Busiest Year in Decades
20 Years on the ISS Proves We Can All Get Along
How the International Space Station Works
NASA's Dragonfly Rotorcraft to Explore Saturn's Giant Moon Titan
Learn More / Page 4
A magnetar is a neutron star with a super-strong magnetic field. Astronomers consider them among the scariest objects in the universe, but why?
There are four others with this unusual honor. While not every other went from space to the Senate like Mark Kelly, their stories are equally as interesting.
Until recently, Arecibo had the biggest radio telescope in the world, and its ability to detect distant signals made it a very powerful tool for studying the universe. It even starred in two movies.
You might call it a Christmas miracle. Jupiter and Saturn will align so closely they may look like a double planet. The last time we saw this was in 1226.
Winter is the perfect time to look for Orion's Belt in the Northern Hemisphere. If you're new to stargazing, we'll show you how to find it.
NASA and other agencies have been studying artificial gravity in hopes they will someday use it to help astronauts combat the effects of weightlessness in space. How close are we to that reality?
The annual Leonid meteor shower is back, and peaks in the late-night hours of November 17. It's made up of tiny bits of debris from the comet Tempel-Tuttle. Here's how to see it.
He stood just 5 feet, 2 inches. But Gagarin cast an enormously long shadow in space exploration, both for his achievements and his mysterious death.
Humans have now occupied the International Space Station for 20 continuous years. What does this international cooperation say about the future of space exploration?
A distant asteroid made mostly of iron is potentially worth $10,000 quadrillion, making it many times more valuable than the global economy.
NASA is sending astronauts to the moon as soon as 2024. And they'll have 4G cell service when they get there.
Even if you've never looked through a telescope, you've probably seen Vega, one of the brightest stars in our galaxy. In fact, thousands of years ago, Vega was our North Pole star, and will be again in the future.
Every autumn, Earth passes through a stream of debris left by Halley's comet, resulting in some beautiful nighttime meteor showers called the Orionids. Here's what to watch for.
When you think about space travel, you probably don't take the time to wonder how astronauts go to the bathroom. However, the annals of aeronautic history abound with space bathroom tales. Here are 10 of our favorites.
Star-gazers gasped when they saw how much Betelgeuse dimmed in 2019 and the reason wasn't clear. Even though it's back up to full strength, how long will it be before it explodes? We haven't seen a supernova in over 400 years.
For decades Bob Lazar talked about a mysterious element 115 that could power alien spacecraft. People thought he was nuts, but scientists discovered element 115 in 2003. What can that element do?
Other companies, like Amazon and Telesat, are planning to emulate StarLink's model, meaning there could soon be as many as 50,000 satellites, mostly for the purpose of internet service, floating around in space.
It's a celestial gift in the middle of August. Just look up for a spectacular sight.
The Perseverance rover will explore Mars' Jezero Crater, gathering rock samples which may prove that life once existed on the red planet.
Comet NEOWISE comes by only once every 6,800 years. But it will be visible to anyone with binoculars or even to the naked eye. Here's how to spot this rare event.
Watching meteor showers can be a spectacular sight. We talked to some astronomy experts on how to improve your meteor-viewing experience.
Astronomers used Hubble's full range of imaging to dissect wild 'fireworks' happening in two nearby young planetary nebulas.
In 1953, CalTech geochemist Clair Patterson came up with an estimate for Earth's age that still holds today.
Uranus is the seventh planet from the sun and sits on an axial plane tilted at a jaw-dropping 97.7-degree angle. And yes, Uranus does actually stink.
By Mark Mancini
For the first time since 2011, NASA will launch astronauts into space from U.S. soil. It will also be the first time ever a private company will get them there.
By Mark Mancini