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The James Webb Space Telescope, a powerful infrared space observatory, is located at L 2. [4] This allows the satellite's sunshield to protect the telescope from the light and heat of the Sun, Earth and Moon simultaneously with no need to rotate the sunshield. The L 1 and L 2 Lagrange points are located about 1,500,000 km (930,000 mi) from Earth.
In interplanetary space a major force is due to solar gravity that attracts similarly planets and dust particles: =, where F G is the force, M = M ☉ is the Solar mass, and m is the mass of the object interacting, r is the distance between the centers of the masses and G is the gravitational constant.
STEREO B (Solar TErrestrial RElations Observatory – Behind) made its closest pass to L 5 in October 2009, on its orbit around the Sun, slightly slower than Earth. [14] The Spitzer Space Telescope is in an Earth-trailing heliocentric orbit drifting away c. 0.1 AU per year. In c. 2013–15 it has passed L 5 in its orbit.
A view of Saturn's rings from NASA's Hubble Space Telescope captured on June 20, 2019. ... to vanish from view every few years due to both Saturn's and Earth's positions as the planets orbit the ...
In an image captured by the Hubble Space Telescope, Saturn’s rings display an unexplained phenomenon that looks like spokes moving across its rings.
J1407b's disk has a 4-million km (2.5-million mi)-wide gap between radii 0.396 to 0.421 AU (59.2 to 63.0 million km; 36.8 to 39.1 million mi), which is believed to have been created by a nearly-Earth-sized (<0.8 M 🜨) exomoon orbiting within that gap and clearing out material, in a similar fashion to the shepherd moons of Saturn's rings.
NASA's Cassini spacecraft, which explored Saturn and its icy moons, including the majestic Titan, ended its mission with a death plunge into the giant ringed planet in 2017. Cassini's radar ...
The Moon's orbit is inclined by several degrees relative to Saturn's, so occultations will only occur when Saturn is near one of the points in the sky where the two planes intersect (both the length of Saturn's year and the 18.6-Earth-year nodal precession period of the Moon's orbit influence the periodicity). [179]