Sotheby's is auctioning a rare diamond that is said to be out of this world
The gem is expected to sell for $6.8 million. But is the black, 555.55-carat diamond really a treasure from outer space?
Space
Sotheby's unveils 555.55-carat black diamond thought to come from outer space
Black diamonds are extremely rare, and are found naturally only in Brazil and Central Africa. The cosmic origin theory of "The Enigma" is based on carbon isotopes and high hydrogen content.
Scientists pour cold water on earlier theory about meteorite found in Antarctica
A 4 billion-year-old meteorite from Mars found decades ago contains no evidence of ancient, primitive Martian life after all, the new scientific report says. The compounds were the result of water.
Scientists think they've found a big, weird moon in a far-off star system
Scientists have found many planets orbiting distant stars, but so far no proof that any have moons. Now, researchers have detected signs of a large exomoon orbiting a Jupiter-like world.
Who gets to use NASA's James Webb Space Telescope? Astronomers work to fight bias
With the James Webb Space Telescope safely deployed, many scientists want to use it. To minimize the effect of unconscious biases, they go through a process developed for the Hubble Space Telescope.
Cyber risks add to climate threat, World Economic Forum warns
Survey of 1,000 experts and leaders finds cybersecurity and space add to the existing challenges of climate change and the coronavirus pandemic.
NASA's James Webb telescope completes its final unfolding in space
Considered the most powerful telescope in space, the James Webb telescope has completed its deployment process. It will still be five months before it will start picking up images.
Zero-gravity ballet: James Webb Space Telescope deploys sunshield and mirror
NASA's James Webb Space Telescope successfully deployed its secondary mirror Wednesday after unfolding its enormous sunshield a day earlier.
NASA has successfully deployed the sunshield on the James Webb Space Telescope
NASA mission managers successfully completed the most complicated part of the unfolding process of James Webb Space Telescope's sunshield — a critical stage in the powerful observatory's deployment.
The James Webb Space Telescope has started unfurling its giant sunshield
The deployment of the shade on the $10 billion telescope began Tuesday with the successful lowering of two arms known as Unitized Pallet Structures.