Evidence from Curiosity Rover Shows Mars Once Had Oxygen-Rich Atmosphere

Mars' atmosphere is thin, dry and cold now, but it used to be thicker and contained a lot more oxygen. Image Credit: ESO/M. Kornmesser

Mars’ atmosphere is thin, dry, and cold now, but it used to be thicker and contained a lot more oxygen. Image Credit: ESO/M. Kornmesser

Mars’ atmosphere is thin and cold, composed primarily of carbon dioxide along with other trace gases and some water vapor. Evidence has continued to mount, however, that the rarified atmosphere […]

Ten Years at Mars: Mars Reconnaissance Orbiter Celebrates a Decade of Discovery

Illustration of Mars Reconnaissance Orbiter (MRO) as it entered orbit ten years ago. Image Credit: NASA/JPL

Illustration of Mars Reconnaissance Orbiter (MRO) as it entered orbit ten years ago. Image Credit: NASA/JPL

The Martian rover Opportunity has become famous for its amazing longevity, but it is not the only one; orbiting spacecraft also usually enjoy long lifespans, and today the Mars Reconnaissance Orbiter is celebrating its 10th year exploring Mars from […]

New Study Suggests Mars' Ancient Surface Shifted and Tilted Due to True Polar Wander

A view of Mars showing the expansive Valles Marineris (center), which is the largest canyons system in the entire Solar System. Three of the four giant shield volcanoes that constitue the massive Tharsis region are seen at far left. A new study by an international team of planetary scientists has provided evidence that the formation of Tharsis had profound effects in the shaping of Mars' geomorphology and climate, ultimately tilting the surface by as much as 20 degrees relative to planet's axis of rotation. Image Credit: NASA/JPL-Caltech

A view of Mars showing the expansive Valles Marineris (center), which is the largest canyons system in the entire Solar System. Three of the four giant shield volcanoes that constitue the massive Tharsis region are seen at far left. A new study by an international team of planetary scientists has provided evidence that the […]

Hubble Space Telescope Analyzes Atmosphere of Super-Earth Exoplanet for First Time

Artist's  conception of 55 Cancri e. Image Credit: ESA/Hubble, M. Kornmesser

Artist’s conception of 55 Cancri e, a searingly hot, carbon-rich world. Image Credit: ESA/Hubble, M. Kornmesser

Exoplanets are now being discovered by the thousands, but most are so far away that determining anything specific about their composition or atmosphere is currently very difficult. But technology keeps advancing, and scientists are now starting to be […]

NASA's FYI 2017 Budget Request May Delay SLS Europa Mission Several Years

We are finally going back to Europa, but it may be a little later than planned. Image Credit: NASA/JPL-Caltech/SETI Institute

We are finally going back to Europa, but it may be a little later than originally planned. Image Credit: NASA/JPL-Caltech/SETI Institute

The recently announced new mission to Jupiter’s moon Europa, a highly anticipated return to this ocean world, may face a launch delay from 2022 to the late 2020s. The news comes amid the release […]

'Cauliflower' Silica Formations on Mars: Evidence of Ancient Life?

Image of "cauliflower" silica formations found by the Spirit rover in 2008 near Home Plate in Gusev crater. Do they hold clues to ancient life on Mars? Photo Credit: NASA/JPL-Caltech

Image of “cauliflower” silica formations found by the Spirit rover in 2008 near Home Plate in Gusev crater. Do they hold clues to ancient life on Mars? Photo Credit: NASA/JPL-Caltech

Was there ever life on Mars? That is one of the longest-running and most debated questions in planetary science, and while there have been […]

Incredible Opportunity: '90-Day Rover' Celebrates 12th Anniversary on Mars

Opportunity examining the rock outcrop called "Private John Potts" on the southern side of Marathon Valley. The rover has just passed its 12th anniversary milestone and is still going strong. Photo Credit: NASA/JPL-Caltech

Opportunity examining the rock outcrop called “Private John Potts” on the southern side of Marathon Valley. The rover has just passed its 12th anniversary milestone and is still going strong. Photo Credit: NASA/JPL-Caltech

We’ve all seen the commercials for the Energizer Bunny, which keeps going and going and going. … It just never seems […]

Mystery Deepens: New Study Shows Comets Don't Explain Odd Dimming of Kepler's 'Weird Star'

The mystery surrounding KIC 8462852 may not involve comets after all, but it is still an enigma for astronomers. Image Credit: NASA

The mystery surrounding KIC 8462852 may not involve comets after all, but it is still an enigma for astronomers. Image Credit: NASA/JPL-Caltech

As has been reported previously on AmericaSpace, and elsewhere, there is something weird going on around a star which is a little over 1,400 light-years away. Astronomers are still baffled as to […]

New 2016 NASA Budget Fully Funds Europa Mission, Including Lander

A view many have been waiting for - artist's concept of the surface of Europa. The new NASA budget brings this closer to reality, with funding for not only a flyby probe, but also a lander. Image Credit: NASA/JPL-Caltech

A view many have been waiting for – artist’s concept of the surface of Europa. The new NASA budget brings this closer to reality, with funding for not only a flyby probe, but also a lander. Image Credit: NASA/JPL-Caltech

This was an exciting and very important week for NASA and planetary exploration: the new […]

Cassini Prepares for Last Epic Flyby of Saturn's Ocean Moon Enceladus

Cassini's final close flyby of Enceladus will be on Dec. 18, 2015. Image Credit: NASA/JPL-Caltech

Cassini’s final close flyby of Enceladus will be on Dec. 19, 2015. Image Credit: NASA/JPL-Caltech

The Cassini spacecraft’s discoveries about the tiny moon Enceladus have been some of the most exciting of the entire mission at Saturn. What was once thought to likely be little more than a frozen ice world has turned out […]