Terrestrial Planet

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Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
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Oort Cloud Etc. Scholz’s Star
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General

Encyclopedia

Terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars. The terms “terrestrial planet” and “telluric planet” are derived from Latin words for Earth (Terra and Tellus), as these planets are, in terms of structure, “Earth-like”.

Terrestrial planets have a solid planetary surface, making them substantially different from the larger giant planets, which are composed mostly of some combination of hydrogen, helium, and water existing in various physical states. — Wikipedia

Encyclopædia Britannica

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Physics and Chemistry of the Terrestrial Planets (MIT)
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Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Earth's cousins: Upcoming missions to look for...
    on February 15, 2020 at 9:44 am

    Scientists have discovered thousands of exoplanets, including dozens of terrestrial—or rocky—worlds in the habitable zones around their parent stars. A promising approach to search for signs of life on these worlds is to probe exoplanet atmospheres for "biosignatures"—quirks in chemical composition that are telltale signs of life. For example, thanks to photosynthesis, our atmosphere is nearly 21% oxygen, a much higher level than expected given Earth's composition, orbit and […]

  • NASA selects four possible missions to study the...
    on February 14, 2020 at 1:56 pm

    NASA has selected four Discovery Program investigations to develop concept studies for new missions. Although they're not official missions yet and some ultimately may not be chosen to move forward, the selections focus on compelling targets and science that are not covered by NASA's active missions or recent selections. Final selections will be made next year.

  • 'Racing certainty' there's life on Europa, says...
    on February 6, 2020 at 2:51 pm

    It's 'almost a racing certainty' there's alien life on Jupiter's moon Europa—and Mars could be hiding primitive microorganisms, too.

  • New global biodiversity study provides unified...
    on February 5, 2020 at 7:00 pm

    New research led by the Monterey Bay Aquarium and partner organizations yielded the first comprehensive global biodiversity map documenting the distribution of life both on land and in the ocean.

  • Scientists solve structure enabling cyanobacteria...
    on February 5, 2020 at 7:00 pm

    Scientists have determined the structure of the protein complex that gives cyanobacteria their unique ability to convert weak, filtered sunlight into useable energy. Their findings could one day be used to engineer crops that thrive under low-light conditions.