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  2. Timeline of artificial satellites and space probes - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_artificial...

    This timeline of artificial satellites and space probes includes uncrewed spacecraft including technology demonstrators, observatories, lunar probes, and interplanetary probes. First satellites from each country are included. Not included are most Earth science satellites, commercial satellites or crewed missions.

  3. List of active Solar System probes - Wikipedia

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

    Space probes operational as of November 2023. 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 transmit ...

  4. Sputnik 1 - Wikipedia

    en.wikipedia.org/wiki/Sputnik_1

    Sputnik 1. Sputnik 1 (/ ˈspʌtnɪk, ˈspʊtnɪk /, Russian: Спутник-1, Satellite 1) was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc ...

  5. Satellite - Wikipedia

    en.wikipedia.org/wiki/Satellite

    This is an accepted version of this page This is the latest accepted revision, reviewed on 26 September 2024. Objects intentionally placed into orbit This article is about human-made satellites. For moons, see Natural satellite. For other uses, see Satellite (disambiguation). Two CubeSats orbiting around Earth after being deployed from the ISS Kibō module's Small Satellite Orbital Deployer A ...

  6. List of Earth observation satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_Earth_observation...

    NASA, Roscosmos, JAXA, ESA, and CSA. 1998. The International Space Station (ISS) has long been used as a central satellite platform for other sensors, including Earth observation sensors. For example: LIS, SAGE III, TSIS-I, ECOSTRESS, GEDI, OCO-3, Diwata-1, and HICO. Jason-3.

  7. List of artificial objects leaving the Solar System - Wikipedia

    en.wikipedia.org/wiki/List_of_artificial_objects...

    Three of the probes, Voyager 1, Voyager 2, and New Horizons are still functioning and are regularly contacted by radio communication, while Pioneer 10 and Pioneer 11 are now defunct. In addition to these spacecraft, some upper stages and de-spin weights are leaving the Solar System, assuming they continue on their trajectories.

  8. This Manmade Satellite Is Brighter Than All But 7 Stars ... - AOL

    www.aol.com/manmade-satellite-brighter-7-stars...

    As the number of man-made satellites in low-Earth orbit (LEO) continues to grow, astronomers are increasingly wary of their effects on terrestrial telescopes. ... astronomers now have a new ...

  9. List of first satellites by country - Wikipedia

    en.wikipedia.org/wiki/List_of_first_satellites...

    Ghana. GhanaSat-1. All Nations University. Launched on same rocket as first Bangladeshi and Mongolian satellites. Mongolia. Mazaalai (satellite) National University of Mongolia. Launched on same rocket as first Ghanaian and Bangladeshi satellites. Latvia.