Terrestrial planet sizes

Författare/Upphovsman:

Mercury image: NASA/JHUAPL
Venus image: NASA
Earth image: NASA/Apollo 17 crew
Mars image: ESA/MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

Kreditera:

Mercury Globe-MESSENGER mosaic centered at 0degN-0degE.jpg
Venus globe.jpg
The Earth seen from Apollo 17.jpg
OSIRIS Mars true color.jpg

Kort länk:

https://sewiki.info/b/a4087

Källa:

Wikimedia Commons

Upplösning:

5208 x 2251 Pixel (3971623 Bytes)

Beskrivning:

This diagram shows the approximate relative sizes of the terrestrial planets, from left to right: Mercury, Venus, Earth and Mars. Distances are not to scale. A terrestrial planet is a planet that is primarily composed of silicate rocks. The term is derived from the Latin word for Earth, "Terra", so an alternate definition would be that these are planets which are, in some notable fashion, "Earth-like". Terrestrial planets are substantially different from gas giants, which might not have solid surfaces and are composed mostly of some combination of hydrogen, helium, and water existing in various physical states. Terrestrial planets all have roughly the same structure: a central metallic core, mostly iron, with a surrounding silicate mantle. Terrestrial planets have canyons, craters, mountains, volcanoes and secondary atmospheres.

Licens:

Public domain