Latest articles by Meghan Bartels
What is the theory of general relativity? Understanding Einstein's space-time revolution
Reference Albert Einstein's theory of general relativity is based on the idea that massive objects cause a distortion in space-time, which is felt as gravity.
The James Webb Space Telescope gets its own micrometeoroid forecast — here's how
Even as the James Webb Space Telescope is allowing astronomers to see inside vast, distant galaxies, it's also studying some tiny, nearby objects, albeit inadvertently.
NASA loses more than 200 Jupiter photos after Juno probe camera glitch
For the second flyby in a row, a key camera studying Jupiter has struggled to snap photos as usual.
The Comet Interceptor probe could visit a stunning object like the green C/2022 E3 (ZTF)
Comet C/2022 E3 (ZTF) is tantalizing to spot through a telescope, but what would it look like up close?
Grounded spacecraft look for new space rocks to visit, including notorious asteroid Apophis
Scientists are working hard to try to salvage a pair of spacecraft that lost their launch — and the solution might include the most notorious asteroid out there, Apophis.
James Webb Space Telescope suffers 2nd instrument glitch
Every spacecraft glitches occasionally, and even the most powerful space telescope ever launched isn't immune.
This new authority will decide the fate of astronomy atop Hawaii's contested Maunakea volcano
After years of conflict, a Hawaiian mountain that's home to some of the most important astronomical observatories on Earth finds itself at peace.
NASA starts designing futuristic space telescope to hunt for alien Earths
NASA's latest flagship telescope is still in its first year of science, but the agency isn't only hard at work building its successor — it's starting to plan that next mission's successor as well.
Astronomers find 2nd Earth-size planet in intriguing alien solar system
NASA's leading planet-hunting spacecraft has spotted its second planet that matches Earth's size and may be able to retain liquid water — and both worlds orbit the same star.
Space candy: Asteroid smashed by NASA's DART probe looks a bit like an M&M, scientists say
Planetary scientists attending the first major conference since NASA's Double Asteroid Redirection Test (DART) permanently moved a space rock offered early findings about the asteroid and the impact.
James Webb Space Telescope back to science operations after glitch
The newest, most powerful space telescope out there is back to work after a glitch blocked several days' worth of science observations.
NASA's Mars InSight lander ends mission after losing power
The Red Planet's harsh dust has claimed another spacecraft.
The sun is waking up, and the world's largest solar telescope is watching
With the world's largest solar telescope now conducting formal observations, scientists are eager to watch the sun's increasing activity and better understand the threats of space weather.
NASA's DART asteroid smash flung 2 million pounds of rock into space
The massive tail created by the collision of a spacecraft and an asteroid earlier this year is unlocking key information about space rocks and how to respond if an asteroid ever threatens Earth.
Astronomers discover strange twin alien planets might be water worlds
Two planets found by NASA's retired Kepler Space Telescope may be made mostly of water, according to new research.
60 years ago today, a spacecraft zipped past planet Venus for the 1st time ever
It was the first planetary flyby ever.
NASA may unlock future James Webb Space Telescope data
Someday, you may be able to see fresh data from the James Webb Space Telescope as soon as the scientists who proposed gathering it do.
Artemis 1 moon mission squeezing communications with James Webb Space Telescope
Two major NASA missions that have launched in the past year are revealing a communications weakness in space.
James Webb Space Telescope view of Saturn's weirdest moon Titan thrills scientists
It's been a cloudy season for Saturn's largest moon, Titan.
Europa Clipper instrument delays worry scientists eyeing 2024 launch
NASA's bold mission to explore Jupiter's icy moon is facing tight schedules getting instruments installed and ready for the planned 2024 launch.
Satellites track glowing lava from Hawaii's Mauna Loa eruption (photos)
Satellites are watching closely as the world's largest volcano erupts for the first time in decades.
ATLAS observatory atop Hawaii's Mauna Loa volcano watching eruption closely
Astronomers are watching with Hawaii residents as the largest volcano on Earth erupts for the first time in decades.
NASA's Artemis 1 launched a solar sail cubesat to an asteroid. It may be in trouble.
A tiny asteroid explorer that launched on NASA's moon mission last week still hasn't phoned home.
