In 1916, Albert Einstein put the finishing touches on his Theory of General Relativity, a journey that began in 1905 with his attempts to reconcile Newton’s own theories of gravitation with the laws of electromagnetism. Once complete, Einstein’s theory provided a unified description of gravity as a geometric property of the cosmos, where massive objects alter the curvature of spacetime, affecting everything around them.
Space News & Blog Articles
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All eyes on weather as Boeing looks to Starliner launch on Tuesday
Weather concerns continue as NASA and Boeing look to launch the Starliner capsule on a vital uncrewed test flight to the International Space Station on Tuesday (Aug. 3).
Look up! Saturn shines bright, shows off rings as it reaches opposition.
Starting Monday (Aug. 2), you can find Saturn shining in the sky as part of a celestial phenomenon called opposition.
4 bizarre Stephen Hawking theories that turned out to be right (and 6 we're not sure about)
Some of Hawking's theories revolutionized the way we view the universe, but others still leave scientists scratching their heads.
Welcome, Jupiter & Saturn!
The Perseids are upon us — and as you're looking out for shooting stars, look for Jupiter and Saturn low in the southeast as soon as night begins to fall.
A hundred days of science for Thomas
“I am finding it magical every day, but there is also a lot of routine,” says ESA astronaut Thomas Pesquet reflecting on his first 100 days aboard the International Space Station during his second mission. In total, Thomas has logged 296 days in space.
Lightweight Carbon Fiber Reinforced Plastic Fuel Tanks Pass a Critical Test, and Could Knock a lot of Weight off a Rocket’s dry Mass
Material science is still the unsung hero of space exploration. Rockets are flashier, and control systems more precise, but they are useless without materials that withstand the immense temperatures of forces required to get people and things off the planet. Now a team from MT Aerospace, working on a grant from ESA, has developed a new type of material that will be immensely useful in one of the most important parts of any rocket engine – the fuel tanks.
Hercules, the mighty strongman of the summer sky
A staple of mythology, the hero Hercules has a strange celestial story.
Perseverance Fails to Collect its First Sample
The growing problem of space junk poses a risk to future space missions, but the solution isn't going to be easy.
7-Eleven launches Coca-Cola Slurpee on stratospheric 'space' flight
Three astronauts on China's new space station have performed the country's first spacewalk and are busy configuring the module for future crews.
How Time Flies: Perseverance and Ingenuity Have Been on Mars for a Year
A sophisticated telecommunications satellite that can be completely repurposed while in space has launched.
OSIRIS-Rex got to Know Bennu Really Well. Apparently, There’s now a 1-in-1,750 Chance That it’ll hit Earth by 2300
An Ariane 5 rocket lifts off Friday from a launch pad in French Guiana. Credit: ESA/CNES/Arianespace – Photo Optique Video du CSG – P. Piron
A European Ariane 5 rocket launched from French Guiana Friday, succeeding on its first flight in nearly a year to deploy a pair of geostationary communications satellites for commercial operators in Brazil and France.
Stunning image shows dark tendrils masking giant galaxy near Earth
See photos of Boeing's Orbital Flight Test 2 mission, the second uncrewed test flight of its Starliner astronaut taxi.
Photos: Inspiration4 launches from Kennedy Space Center
Europe's Ariane 5 heavy-lift rocket roared back into action today (July 30) after nearly a year-long hiatus, launching two telecommunications satellites to orbit.
Ariane 5 launches pioneering reprogrammable telecommunications satellite
Europe’s Ariane 5 has delivered two telecom satellites Star One D2 and Eutelsat Quantum into their planned transfer orbits.
Eutelsat Quantum liftoff
Video: 00:00:49
The first flight of Ariane 5 in 2021 delivers two satellites including the ESA-backed telecommunications satellite Eutelsat Quantum into space.
Blue Origin protest of NASA moon lander choice nixed by government agency
Blue Origin's protest against NASA's decision to not hire the company to build its next human moon lander has been shut down by the U.S. Government Accountability Office (GAO).
Live coverage: Ariane 5 rocket set to launch two geostationary comsats
Live coverage of the countdown and launch of an Ariane 5 rocket with Star One D2 and Eutelsat Quantum communications satellites. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
InSight has Mapped out the Interior of Mars, Revealing the Sizes of its Crust, Mantle, and Core
In May of 2018, NASA’s Interior Exploration using Seismic Investigations, Geodesy, and Heat Transport (InSight) landed on the Martian surface. This mission is the first of its kind, as all previous orbiters, landers, and rovers focused on studying the surface and atmosphere of Mars. In contrast, InSight was tasked with characterizing Mars’ interior structure and measuring the core, mantle, and crust by reading its seismic activity (aka. “marsquakes”).
Boeing's Starliner capsule rolls away from pad after launch delay (photos)
Boeing's Starliner capsule has left the launch pad, just 24 hours after it got there.
"Liquid Water" Below Martian Surface Might Be Clay
Mysterious spots that scientists thought were subsurface lakes beneath the Martian south pole may instead be ancient clay deposits.
