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  2. List of Solar System probes - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System_probes

    This is a list of space probes that have left Earth orbit (or were launched with that intention but failed), organized by their planned destination. It includes planetary probes, solar probes, and probes to asteroids and comets, but excludes lunar missions, which are listed separately at List of lunar probes and List of Apollo missions.

  3. Planetary mass - Wikipedia

    en.wikipedia.org/wiki/Planetary_mass

    The mass of a planet can be inferred from its effect on the orbits of other planets. In 1931-1948 flawed applications of this method led to incorrect calculations of the mass of Pluto. Data from influence collected from the orbits of space probes can be used. Examples include Voyager probes to the outer planets and the MESSENGER spacecraft to ...

  4. Gravity assist - Wikipedia

    en.wikipedia.org/wiki/Gravity_assist

    A gravity assist, gravity assist maneuver, swing-by, or generally a gravitational slingshot in orbital mechanics, is a type of spaceflight flyby which makes use of the relative movement (e.g. orbit around the Sun) and gravity of a planet or other astronomical object to alter the path and speed of a spacecraft, typically to save propellant and reduce expense.

  5. New Horizons - Wikipedia

    en.wikipedia.org/wiki/New_Horizons

    At Pluto's distance, radio signals from the space probe back to Earth took four hours and 25 minutes to traverse 4.7 billion km of space. [68] Part of the reason for the delay between the gathering of and transmission of data is that all of the New Horizons instrumentation is body-mounted. In order for the cameras to record data, the entire ...

  6. Europa Clipper - Wikipedia

    en.wikipedia.org/wiki/Europa_Clipper

    Europa Clipper (previously known as Europa Multiple Flyby Mission) is a space probe developed by NASA to study Europa, a Galilean moon of Jupiter. It was launched on October 14, 2024. [ 15 ] The spacecraft will use gravity assists from Mars on March 1, 2025, [ 10 ] and Earth on December 3, 2026, [ 11 ] before arriving at Europa in April 2030 ...

  7. Galileo (spacecraft) - Wikipedia

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

    At launch, the orbiter and probe together had a mass of 2,562 kg (5,648 lb) and stood 6.15 m (20.2 ft) tall. [2] Spacecraft are normally stabilized either by spinning around a fixed axis or by maintaining a fixed orientation with reference the Sun and a star; Galileo did both.

  8. List of active Solar System probes - Wikipedia

    en.wikipedia.org/wiki/List_of_active_Solar...

    Solar System space probes operational as of November 2024. This is a list of active space probes which have escaped Earth orbit. It includes lunar space probes, but does not include space probes orbiting at the Sun–Earth Lagrangian points (for these, see List of objects at Lagrangian points). A craft is deemed "active" if it is still able to ...

  9. Parker Solar Probe - Wikipedia

    en.wikipedia.org/wiki/Parker_Solar_Probe

    The Parker Solar Probe (PSP; previously Solar Probe, Solar Probe Plus or Solar Probe+) [6] is a NASA space probe launched in 2018 to make observations of the Sun's outer corona. It used repeated gravity assists from Venus to develop an eccentric orbit, approaching within 9.86 solar radii (6.9 million km or 4.3 million miles) [7] [8] from the ...