One Day to Pluto: Looking Back at Humanity's First-Time Successful Encounters With the Sun's Planets

Tomorrow’s historic flyby of the dwarf planet Pluto and its binary companion, Charon, will mark the completion of humanity’s first-time exploration of each of the Solar System’s nine traditional planets. Photo Credit: NASA

Tomorrow, the United States will become the first nation to have conducted a close-range reconnaissance of all nine “traditional” planets in […]

Jack King, NASA's 'Voice of Apollo,' Passes Away at Age 84

Jack King, the first chief of Public Information for NASA’s Launch Operations Center at Cape Canaveral Air Force Station, briefs the news media on the May 2, 1961, postponement of the launch of Mercury Redstone-3 due to unfavorable weather. Three days later, astronaut Alan Shepard made history as the first American in space. The […]

Astronomers Find First Evidence of Possible Volcanic Activity On a Super-Earth Exoplanet

Artist’s conception of super-Earth exoplanet 55 Cancri e, before and after volcanic activity on its day side. The surface may be partially molten. Image Credit: NASA/JPL-Caltech/R. Hurt

Discovering new exoplanets has become rather routine in the last few years, but determining just what conditions exist on any of them is naturally more difficult, since […]

SpaceX Prepares for Latest in Long History of Critical Pad Abort Tests (Part 1)

The LJ-1B Little Joe mission launches from Wallops on 21 January 1960, carrying “Miss Sam”, the second rhesus passenger, on a critical Pad Abort Test for Project Mercury. Photo Credit: NASA

Following the recent successes of the CRS-6 Dragon launch toward the International Space Station (ISS) on 14 April and last week’s flight of […]

Rest In Pieces: MESSENGER Ends Orbital Operations, Impacts Mercury's Surface

The MESSENGER spacecraft, depicted in this artist’s rendering, began studying Mercury in 2011. Today, its mission ended with its impact on the far side of the planet. Image Credit: NASA

Here’s MESSENGER by the numbers: Years since launching: 10+; Years in Mercury’s orbit: Four; Number of orbits: 4,105; Size of its impact crater: Estimated […]

MESSENGER Mission Nears Its End, Set for Mercury Impact April 30

A global map of Mercury, composed of thousands of individual images from MESSENGER. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

One of the most oft-repeated quotes in the English lexicon is: “There’s no place like home.” One spacecraft’s long journey, begun in 2004, will end as it impacts upon the […]

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 […]

PHOTOS: San Diego Air and Space Museum Celebrates Apollo 13, Spaceflight Milestones

Moderator Mark Larson gestures at an animated Rusty Schweickart during the Apollo 13 panel at Saturday’s celebratory event at the San Diego Air & Space Museum. Photo Credit: Robert C. Fisher / AmericaSpace

On the evening of Saturday, March 21, guests enjoyed a unique celebration at the San Diego Air & Space Museum, which […]

San Diego Air and Space Museum to Celebrate Apollo 13's 45th Anniversary: Interview with Francis French and Gordon Permann

Fred Haise, Jack Swigert, and Jim Lovell pose for a pre-flight photo days before their mission. Photo Credit: NASA/The Project Apollo Image Gallery via the Project Apollo Archive

2015 is a year full of spaceflight milestone anniversaries, including the 50th anniversaries of the first five crewed Gemini missions (including the first U.S. spacewalk, and […]

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 […]