Earth and Moon seen from Saturn and Mercury

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These images show views of Earth and the moon from NASA’s Cassini (left) and MESSENGER spacecraft (right) from July 19, 2013.

In the Cassini image, the wide-angle camera has captured Saturn’s rings and our planet Earth and its moon in the same frame. Earth, which is 898 million miles (1.44 billion kilometers) away in this image, appears as a blue dot at center right; the moon can be seen as a fainter protrusion off its right side. An arrow indicates their location in the annotated version. The other bright dots nearby are stars.

Linda Spilker, Cassini project scientist, at NASA’s Jet Propulsion Laboratory in Pasadena, Calif. said, “Cassini’s picture reminds us how tiny our home planet is in the vastness of space, and also testifies to the ingenuity of the citizens of this tiny planet to send a robotic spacecraft so far away from home to study Saturn and take a look-back photo of Earth.”

In the MESSENGER image, Earth and the moon appear as a pair of bright star-like features. MESSENGER was at a distance of 61 million miles (98 million kilometers) from Earth when it took this image with the wide-angle camera of the Mercury Dual Imaging System.

MESSENGER took this image as part of a campaign to search for natural satellites of Mercury. Earth and the moon appear very large in this picture because they are overexposed. When looking for potentially dim satellites, long exposures are required to capture as much light as possible. Consequently, bright objects in the field of view become saturated and appear artificially large. In fact, Earth and the moon are each less than a pixel in size, and no details on either can be seen.

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The Earth is also a planet: A Big Blue Marble

Photo Credit: NASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring
Big Image from New Satellite Captures Amazing Detail

A ‘Blue Marble’ image of the Earth taken from the VIIRS instrument aboard NASA’s most recently launched Earth-observing satellite – Suomi NPP. This composite image uses a number of swaths of the Earth’s surface taken on January 4, 2012. The NPP satellite was renamed ‘Suomi NPP’ on January 24, 2012 to honor the late Verner E. Suomi of the University of Wisconsin.

Suomi NPP is NASA’s next Earth-observing research satellite. It is the first of a new generation of satellites that will observe many facets of our changing Earth. Suomi NPP is carrying five instruments on board. The biggest and most important instrument is The Visible/Infrared Imager Radiometer Suite or VIIRS.

Various sizes of this awe-inspiring image are available through NASA’s Flickr site including the astonishingly big 8,000 X 8,000-pixel original size! Be warned… it may be too much for your browser to handle!

Credit: NASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring