AmericaSpace Launch Countdown

Next Launch GPS IIF-7 on a Atlas V 401 rocket from Cape Canaveral AFB, FL scheduled for 1 Aug 14 3:27:00 GMT

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Jupiter's Great Red Spot Is Shrinking—Now the Smallest Ever Seen

In this new image from the Hubble Space Telescope, Jupiter’s Great Red Spot is seen at its smallest size ever recorded. Photo Credit: NASA / ESA / A. Simon (Goddard Space Flight Center)

The Great Red Spot on Jupiter is one of the most recognizable features in the Solar System: a massive hurricane-like oval-shaped storm [...]

JUNO Returns to Earth Wednesday for Critical Gravitational Slingshot to Jupiter

An artist’s concept of JUNO’s approach to Earth for an Oct. 9 gravity-assist maneuver. Image Credit: NASA/JPL-Caltech

On Aug. 5, 2011, United Launch Alliance sent NASA’s JUNO spacecraft on a five-year trip to visit our Solar System’s largest planet—Jupiter. Problem is, Jupiter is so far, and the 8,000-pound solar-powered JUNO is so heavy, that [...]

Juno Mission Passes Halfway Mark to Jupiter

Spectators crowd the shoreline as an Atlas 5 rocket launches NASA’s Juno spacecraft to Jupiter in August 2011, as photographed from Playalinda Beach. Photo Credit: Mike Killian

Twenty-four months since its launch from Cape Canaveral Air Force Station, Fla., NASA’s Juno mission officially passed the halfway point in a five-year journey to Jupiter yesterday [...]

NASA's Chandra Sees Eclipsing Planet in X-rays for First Time

Image Credit: X-ray: NASA/CXC/SAO/K. Poppenhaeger et al; Illustration: NASA/CXC/M. Weiss

For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent star.

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Missions to the Icy Moons

It turns out that the moons of the outer solar system are shaping up to be some of the most dynamic destinations in terms of planetary exploration. Image Credit: NASA / JPL

Far from the warm inner regions of the solar system, in orbit around the great gas giants are moons full of surprises. [...]

Scientists to Io: Volcanoes are in the Wrong Spot

Video courtesy of NASA

Jupiter’s moon Io is the most volcanically active world in the solar system, with hundreds of volcanoes, some erupting lava fountains up to 250 miles high (about 400 kilometers). However, concentrations of volcanic activity are significantly displaced from where they are expected to be, based [...]

Herschel Links Water Around Jupiter to Comet Impact

This map shows the distribution of water in the stratosphere of Jupiter as measured with the Herschel Space Observatory. White and cyan indicate highest concentration of water, and blue indicates lesser amounts. The map has been superimposed over an image of Jupiter taken at visible wavelengths with the NASA/ESA Hubble Space Telescope. Image credit: [...]

Where Are the Best Windows Into Europa's Interior?

This graphic of Jupiter’s moon Europa maps a relationship between the amount of energy deposited onto the moon from charged-particle bombardment and the chemical contents of ice deposits on the surface in five areas of the moon (labeled A through E). Image Credit: NASA/JPL-Caltech/Univ. of Ariz./JHUAPL/Univ. of Colo.

The surface of Jupiter’s moon Europa [...]

NASA to Provide European Space Agency Ingredients for its JUICE

NASA will be contributing to the European Space Agency’s JUICE mission to the icy worlds of Jupiter. Image Credit: ESA

The European Space Agency’s (ESA) Jupiter Icy Moons Explorer (JUICE) mission will gain three key contributions from NASA. The mission, slated to launch in 2022, is set to explore the gas giant as well [...]

The Search for Alien Life Part 2: In the Realm of the Gas Giants

The trailing hemisphere of Jupiter’s moon Europa as imaged by Galileo. Photo Credit: NASA

Beyond the main asteroid belt lie the giant planets Jupiter and Saturn and their impressive retinues of moons. What chances for life are out here in the frozen wastes of the solar system? At first glance, you’d imagine none. The [...]