From Shuttle to Hubble: An Interview With Dr. Story Musgrave

The STS-61 crew restored full sight to the ailing Hubble Space Telescope in December 1993. Standing at top, from left: Richard Covey, Jeffrey Hoffman, and Thomas Akers. Seated at bottom, from left: Kenneth Bowersox, Kathryn Thornton, Dr. Story Musgrave, and Claude Nicollier (ESA). Photo Credit: NASA

In space shuttle history, there is one astronaut […]

Hubble and Chandra Unveil Mysteries Concerning Dark Matter

From HubbleSite: “This collage shows images of six different galaxy clusters taken with NASA’s Hubble Space Telescope and Chandra X-ray Observatory. The clusters were observed in a study of how dark matter in clusters of galaxies behaves when the clusters collide. Seventy-two large cluster collisions were studied in total. Using visible-light images from Hubble, […]

Two Earth-Sized Exoplanets May Exist in Closest Star System, Hubble Observations Reveal

Artist’s conception of the Alpha Centauri binary star system and the exoplanet Alpha Centauri Bb. Our own Sun is also shown in the distance. Image Credit: ESO/L. Calçada/N. Risinger

The closest star system to our own Sun may have two Earth-sized exoplanets orbiting it, a new study has shown based on observations by the […]

Hubble Shows Evidence of Large Underground Ocean on Ganymede

From HubbleSite: “NASA’s Hubble Space Telescope observed a pair of auroral belts encircling the Jovian moon Ganymede. The belts were observed in ultraviolet light by the Space Telescope Imaging Spectrograph and are colored blue in this illustration. They are overlaid on a visible-light image of Ganymede taken by NASA’s Galileo orbiter. The locations of […]

First Mission to Dwarf Planet Set for Ceres Arrival, Sees Surprising 'Bright Spots' Beyond Compare

Ceres awaits Dawn with two totally unique bright spots inside crater. Ceres rotates in this sped-up movie comprised of images taken by NASA’s Dawn mission during its approach to the dwarf planet. The images were taken on Feb. 19, 2015, from a distance of nearly 29,000 miles (46,000 kilometers). Dawn observed Ceres for a […]

Getting Closer! New Horizons Sees Two of Pluto's Smaller Moons for First Time

Long-exposure images taken by New Horizons between Jan. 27 and Feb. 8, 2015, showing the two tiny moons Hydra (inside yellow diamond) and Nix (inside orange diamond). Image Credit: Image credits: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

The New Horizons spacecraft, on course for a historic encounter with Pluto this summer, is […]

New Horizons Sends Back New Photos of Pluto on Clyde Tombaugh's Birthday

Two new images of Pluto and its largest moon Charon, taken on Jan. 25 and Jan. 27, 2015 by the New Horizons spacecraft. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

As the New Horizons spacecraft continues speeding toward its rendezvous with Pluto this summer, it has just sent back new photos […]

Coming Down the Home Stretch: New Horizons Begins Historic Long-Range Reconnaissance of Pluto, Prior to Closest Approach in July

Artist’s concept of NASA’s New Horizons spacecraft as it passes by Pluto and its largest moon, Charon, in July 2015. Following its wake-up call from its hibernation late last year, the spacecraft has just entered the first leg of its approach phase to the Pluto system. Image Credit: NASA/JHU APL/SwRI/Steve Gribben

Nine years ago […]

Astronomers Measure Galactic Winds at Milky Way's Center, Detect Record-Breaking X-Ray Flares From Its Supermassive Black Hole

A composite image of the area around the supermassive black hole at the center of the Milky Way, known as Sagittarius A* (Sgr A*), taken with NASA’s Chandra X-ray space telescope. The colors in the main image represent medium, and high-energy X-rays as red, green, and blue respectively. The inset box shows a giant […]

Huge Prospects for Science and Humans to Mars: Conversation With Hubble Astronaut/NASA Science Chief John Grunsfeld (Part 2)

Launch of Space Shuttle Atlantis on STS-125 and the final servicing mission to the Hubble Space Telescope on May 11, 2009, from Launch Complex-39A at the Kennedy Space Center in Florida. Credit: Ken Kremer – kenkremer.com

KENNEDY SPACE CENTER, FL — “A great path” lies ahead for “science and launching humans to Mars,” says astronaut […]