The first light of the universe was spotted by scientists when looking at the cosmic microwave. The discovery can change ...

The nature and evolution of stars, galaxies, galaxy clusters, dark matter and dark energy—and our attempts to understand these things—allow us to pose the ultimate questions and reach for the ultimate ...

Solar scientists have unveiled spectacular new images of plasma "rain" in the sun's corona using adaptive optics.

The Hubble was designed to be serviced and enhanced ... They included replacing the High Speed Photometer with the COSTAR corrective optics package, and replacing the Wide Field and Planetary ...

In April 1990, a crew of five astronauts aboard the Space Shuttle deployed the Hubble Space Telescope into orbit. Credit: NASA Astronauts installing the Corrective Optics Space Telescope Axial ...

"Knock on wood, it can go another 10 years," former astronaut John Grunsfeld says. John Grunsfeld has a model of the Hubble Space Telescope on his bookshelf. It's right next to a model of a NASA ...

and astronauts came to the rescue on the first of five space shuttle servicing missions in December 1993 to improve Hubble’s vision with corrective optics. You can read about the challenges ...

For example, NASA officials noted that Dragon's thruster exhaust could potentially contaminate Hubble's supersensitive optics. But the agency's decision was not a permanent, blanket "no." NASA ...

"Hubble opened a new window to the universe when ... But a daring shuttle service mission in 1993 fixed the optics, transforming a PR nightmare into a testament to human ingenuity.

The Hubble Space Telescope and a spacewalking NASA astronaut are seen in orbit around Earth during STS-61, the 1993 servicing mission to correct the observatory’s optics. M104, nicknamed the ...

Astronauts gallantly came to the rescue on the first shuttle servicing mission in December 1993 to improve Hubble's sharpness with corrective optics. To date, Hubble has made nearly 1.7 million ...