Earth and Moon seen from 183 million kilometers away

August 20, 2010 | By | Add a Comment
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The MESSENGER team have released the below image of the Earth and Moon as seen from 183 million kilometers away by the MESSENGER spacecraft which is currently on its way to orbit the innermost planet in our solar system: Mercury. The image was released on 17 August 2010 (US time).

Earth and the Moon are the two bright star like objects in the bottom left hand side of the image. Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

Text from the image webpage:

‘In the lower left portion of this image, the Earth can be seen, as well as the much smaller Moon to Earth’s right. When MESSENGER took this image, a distance of 183 million kilometers (114 million miles) separated the spacecraft and Earth. To provide context for this distance, the average separation between the Earth and the Sun is about 150 million kilometers (93 million miles). Though it is a beautiful, thought-provoking picture, viewing our planet from far away was not the main reason that the mission team planned the collection of this image. Instead, this image was acquired as part of MESSENGER’s campaign to search for vulcanoids, small rocky objects that have been postulated to exist in orbits between Mercury and the Sun. Though no vulcanoids have yet been detected, the MESSENGER spacecraft is in a unique position to look for smaller and fainter vulcanoids than has ever before been possible. MESSENGER’s vulcanoid searches occur near perihelion passages, when the spacecraft’s orbit brings it closest to the Sun. Today is another such perihelion, and MESSENGER is taking a new set of images to search for tiny asteroids lurking close to the Sun.’

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This website is maintained by Paul Floyd. I am an amateur astronomer (and school teacher) with 25 years experience (as at 2015) in running a range of education and public astronomy outreach activities. As of January 2015, I have been providing astronomy information via the WWW for eighteen years.