With the existence of various orbiters, landers, and rovers, it is now possible to study astronomy from the Martian skies. Although Mars' moon Phobos appears about one third the angular diameter of the full moon as it appears from Earth, Deimos appears more or less star-like and appears only slightly brighter than Venus does from Earth.[180]
There are various phenomena, well-known on Earth, that have been observed on Mars, such as meteors and auroras.[181] A transit of Earth as seen from Mars will occur on November 10, 2084.[182] There are also transits of Mercury and transits of Venus, and the moons Phobos and Deimos are of sufficiently small angular diameter that their partial "eclipses" of the Sun are best considered transits (see Transit of Deimos from Mars).[183][184]
On October 19, 2014, Comet Siding Spring passed extremely close to Mars, so close that the coma may have enveloped
With the existence of various orbiters, landers, and rovers, it is now possible to study astronomy from the Martian skies. Although Mars' moon Phobos appears about one third the angular diameter of the full moon as it appears from Earth, Deimos appears more or less star-like and appears only slightly brighter than Venus does from Earth.[180]
There are various phenomena, well-known on Earth, that have been observed on Mars, such as meteors and auroras.[181] A transit of Earth as seen from Mars will occur on November 10, 2084.[182] There are also transits of Mercury and transits of Venus, and the moons Phobos and Deimos are of sufficiently small angular diameter that their partial "eclipses" of the Sun are best considered transits (see Transit of Deimos from Mars).[183][184]
On October 19, 2014, Comet Siding Spring passed extremely close to Mars, so close that the coma may have enveloped
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