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.
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.
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.
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,...
NASA's Kepler mission has confirmed the first near-Earth-size planet in the habitable zone around a sun-like star. This discovery and the introduction of 11 other new small habitable-zone candidate planets mark another milestone in the journey to finding another Earth.
