Apollo 4 Test Flight Celebrates 50th Anniversary

Apollo 4 Test Flight Celebrates 50th Anniversary

On Nov. 9, 1967, the uncrewed Apollo 4 test flight made a great ellipse around Earth as a test of the translunar motors and high-speed entry required of a crewed flight returning from the moon. A 70-millimeter camera was programmed to look out a window toward Earth and take a series of photographs from high apogee.

Earth and Moon Seen from Mars

Earth and Moon Seen from Mars

A composite image of Earth and its moon, as seen from Mars, combines the best Earth image with the best moon image from four sets of images acquired on Nov. 20, 2016, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.

Mysteries of Wobbling Earth Solved

Mysteries of Wobbling Earth Solved

Using satellite data on how water moves around Earth, NASA scientists solved two mysteries about wobbles in the planet’s rotation. Earth's spin axis drifts slowly around the poles; the farthest away it has wobbled since observations began is 37 feet (12 meters). These wobbles don't affect daily life, but they must be taken into account to get accurate results from GPS, Earth-observing satellites and ground-based observatories.

Drones Give Scientists a New Self-Service Approach

Drones Give Scientists a New Self-Service Approach

TEMPE, Ariz., Feb. 5, 2016—Earth and environmental scientists have often had to rely on piloted aircraft and satellites to collect remote sensing data, platforms that have traditionally been controlled by large research organizations or regulatory agencies. Thanks...

The Geography of Antarctica's Underside

December 11, 2015 — Planetary scientists would be thrilled if they could peel the Earth like an orange and look at what lies beneath the thin crust. We live on the planet’s cold surface, but the Earth is a solid body and the surface is continually deformed,...

2014 Was the Warmest Year in the Modern Record

2014 Was the Warmest Year in the Modern Record

The year 2014 was Earth’s warmest in 134 years of records, according to an analysis of surface temperature measurements by scientists at NASA’s Goddard Institute for Space Studies (GISS). In a separate, independent analysis, scientists at the National Oceanic and...

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