Earth- third in line from Sun is the only planet known to have oxygen, liquid water on its surface and of-course, life. With a diameter of 13,000 kilometres, Earth is the fifth biggest planet in our solar system. Earth is not completely round, in-fact it is an “oblate spheroid,” since its spin makes it to be crushed at its poles and swollen at the equator.
This image of crescent-shaped Earth and Moon was documented by NASA’s Voyager 1 spacecraft on Sept. 18, 1977, when it was 11.66 million kilometres from Earth. Jet Propulsion Laboratory’s Image Processing Lab made this photo by processing three images taken through colour filters. Since the Moon is many times less brighter than Earth, so to make it clearly visible in the photo, it was artificially brightened by a factor of three compared to Earth.
This photo of Earth was captured by Kepler Space Telescope at 94 million miles away on 10th December 2017. In this image Earth appears as a bright flash light among the sea of stars, completely obscuring our moon Luna. Some stars are hundreds of light years away.
This rare image of Saturn’s rings and Earth-Moon system was taken by NASA’s Cassini spacecraft on 19th July 2013 at 1.44 billion kilometres away. Earth appears to be a blue dot at the centre right as indicated by arrow. The other visible bright dots/objects are stars.
This photo of Earth rise was made from a series of images taken by NASA’s Lunar Reconnaissance Orbiter (LRO) on 12th October 2015 from 134 kilometres above the moon’s far-side crater Compton.
NASA’s OSIRIS-REx spacecraft captured this image of the Earth and Moon on 17th January 2018 from a distance of 63.6 million kilometres. Earth can be seen as the largest, brightest spot in the centre of the image. While the smaller, dimmer companion appearing to the right is Moon.
This image of Earth-Moon was taken by NASA’s Curiosity rover from the surface of Mars. Image was taken on the 529th Martian day, or sol, (Jan. 31, 2014). At that time the distance between Earth and Mars was about 160 million kilometres.
These images were taken on July 16, 2015 by the Deep Space Climate Observatory (DSCOVR) satellite. The animation features the real satellite images of the Moon’s far side as it crosses between DSCOVR and Earth at about one million miles away.
Galileo spacecraft took this photo of Earth-Moon system on 16 December 1992 from a distance of about 6.2 million kilometres.
European Space Agency’s (ESA) Rosetta spacecraft captured this stunning image of Earth on 12th November 2009 from a distance of about 633,000 kilometres.