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  2. NEO Surveyor - Wikipedia

    en.wikipedia.org/wiki/NEO_Surveyor

    The NEO Surveyor spacecraft will have a total mass of no more than 1,300 kg (2,900 lb), allowing it to launch on a vehicle like a Falcon 9 Block 5 to the Sun–Earth L 1 Lagrange point. The mission should reach the 90% congressional goal within 10 years, with an anticipated mission lifetime of 12 years.

  3. Earth mass - Wikipedia

    en.wikipedia.org/wiki/Earth_mass

    An Earth mass (denoted as M 🜨, M ♁ or M E, where 🜨 and ♁ are the astronomical symbols for Earth), is a unit of mass equal to the mass of the planet Earth. The current best estimate for the mass of Earth is M 🜨 = 5.9722 × 10 24 kg , with a relative uncertainty of 10 −4 . [ 2 ]

  4. STS-61-C - Wikipedia

    en.wikipedia.org/wiki/STS-61-C

    The mission lasted a total of 6 days, 2 hours, 3 minutes, and 51 seconds. STS-61-C was the last successful Space Shuttle flight before the Challenger disaster, which occurred on January 28, 1986, only 10 days after Columbia ' s return. Accordingly, commander Gibson later called the STS-61-C mission "The End of Innocence" for the Shuttle Program ...

  5. Geopotential spherical harmonic model - Wikipedia

    en.wikipedia.org/wiki/Geopotential_spherical...

    As P 0 n (x) = −P 0 n (−x) non-zero coefficients J n for odd n correspond to a lack of symmetry "north–south" relative the equatorial plane for the mass distribution of Earth. Non-zero coefficients C n m, S n m correspond to a lack of rotational symmetry around the polar axis for the mass distribution of Earth, i.e. to a "tri-axiality" of ...

  6. Psyche (spacecraft) - Wikipedia

    en.wikipedia.org/wiki/Psyche_(spacecraft)

    Psyche (/ ˈ s aɪ k i / SY-kee) is a NASA Discovery Program space mission launched on October 13, 2023, to explore the origin of planetary cores by orbiting and studying the metallic asteroid 16 Psyche beginning in 2029. [8] NASA's Jet Propulsion Laboratory (JPL) manages the project.

  7. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    Most of Earth's hydrosphere consists of Earth's global ocean. Earth's hydrosphere also consists of water in the atmosphere and on land, including clouds, inland seas, lakes, rivers, and underground waters. The mass of the oceans is approximately 1.35 × 10 18 metric tons or about 1/4400 of Earth's total mass.

  8. Spaceborne Imaging Radar - Wikipedia

    en.wikipedia.org/wiki/Spaceborne_Imaging_Radar

    The Radar-C system was built and operated by NASA's Jet Propulsion Laboratory (JPL). The mission was a joint work of NASA with the German and Italian space agencies. [2] [3] Each of the week long mission scanned about 50 million square kilometers of the Earth's surface, (19.3 million square miles). [4]

  9. Shuttle-Centaur - Wikipedia

    en.wikipedia.org/wiki/Shuttle-Centaur

    Empty mass: 3,060 kg (6,750 lb) ... delays in the Space Shuttle program pushed the launch date for ... Because Earth's orbit is inclined only 7.25 degrees ...