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Ganymede is composed of silicate rock and water in approximately equal proportions. It is a fully differentiated body with an iron-rich, liquid metallic core, giving it the lowest moment of inertia factor of any solid body in the Solar System. Its internal ocean potentially contains more water than all of Earth's oceans combined. [19] [20] [21 ...
Cassini became the fourth space probe to visit Saturn and the first to enter its orbit, where it operated from 2004 to 2017. The spacecraft's journey to Saturn included flybys of Venus in April 1998 and June 1999, Earth in August 1999, the asteroid 2685 Masursky, and Jupiter in December 2000. Cassini entered Saturn's orbit on 1 July 2004.
2009 YE 7 has been found to be a member of the Haumea family fragment due to its Haumea-like orbit and the detection of water ice on its surface. [3] This means 2009 YE 7 could have an albedo of up to 0.7, resulting in a small size close to 200 kilometres (120 mi). Its actual albedo is unknown; if it turns out to be lower, it will result in a ...
Close to the moon's south pole are two canyons each comparable in size to the Grand Canyon that were born in a much different process. New research indicates that these canyons, in an area called ...
While no scientist has stated to believe GJ 1214 b is an ocean planet, if GJ 1214 b is assumed to be an ocean planet, [22] i.e. the interior is assumed to be composed primarily of a water core surrounded by more water, proportions of the total mass consistent with the mass and radius are about 25% rock and 75% water, covered by a thick envelope ...
In fiscal year 2023, it disbursed $72 billion of assistance worldwide on everything from women's health in conflict zones to access to clean water, HIV/AIDS treatments, energy security and anti ...
A sign is seen at a press conference held by the Congressional Progressive Caucus on the activities of Elon Musk's Department of Government Efficiency at the U.S. Capitol on February 06, 2025 in ...
The star Kepler-62 has five planets, two of which are the right distance from the star to have liquid water and potentially sustain life. [39] Kepler-62f is only 40 percent larger than Earth, making it the exoplanet closest to the size of Earth known in the habitable zone of another star.