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  2. Human presence in space - Wikipedia

    en.wikipedia.org/wiki/Human_presence_in_space

    Earth and Moon from Mars, imaged by Mars Global Surveyor on May 8, 2003, 13:00 UTC. South America is visible. Earth observation has been one of the first missions of spaceflight, resulting in a dense contemporary presence of Earth observation satellites, having a wealth of uses and benefits for life on Earth.

  3. Graveyard orbit - Wikipedia

    en.wikipedia.org/wiki/Graveyard_orbit

    While the standard geosynchronous satellite graveyard orbit results in an expected orbital lifetime of millions of years, the increasing number of satellites, the launch of microsatellites, and the FCC approval of large megaconstellations of thousands of satellites for launch by 2022 necessitates new approaches for deorbiting to assure earlier removal of the objects once they have reached end ...

  4. Habitability of natural satellites - Wikipedia

    en.wikipedia.org/wiki/Habitability_of_natural...

    To support an Earth-like atmosphere for about 4.6 billion years (Earth's current age), a moon with a Mars-like density is estimated to need at least 7% of Earth's mass. [20] One way to decrease loss from sputtering is for the moon to have a strong magnetic field of its own that can deflect stellar wind and radiation belts.

  5. Space burial - Wikipedia

    en.wikipedia.org/wiki/Space_burial

    An aircraft departing from the Canary Islands carried a Pegasus rocket containing samples of the remains of 24 people to an altitude of 11 km (6.8 mi) above the Atlantic Ocean. The rocket then carried the remains into an elliptical orbit with an apogee of 578 km (359 mi) and a perigee of 551 km (342 mi), orbiting the Earth once every 96 minutes ...

  6. 50 Times People Found Such Strange Things On Google Earth ...

    www.aol.com/76-times-people-found-strange...

    Image credits: Furious Thoughts You can also use Google Earth to explore the planet and various cities, locations, and landscapes using coordinates.The program covers most of the globe (97% back ...

  7. Planetary habitability - Wikipedia

    en.wikipedia.org/wiki/Planetary_habitability

    While Earth is the only place in the Universe known to harbor life, [10] [11] estimates of habitable zones around other stars, [12] [13] along with the discovery of thousands of exoplanets and new insights into the extreme habitats on Earth where organisms known as extremophiles live, suggest that there may be many more habitable places in the ...

  8. SpaceX's Starlink satellites have a lot of scientists worried ...

    www.aol.com/spacexs-starlink-satellites-lot...

    The number of satellites in Earth's orbit has skyrocketed from about 1,000 in 2010 to more than 10,000 today. ... People. Co-worker jokes that man skipped work because he won the lottery. Turns ...

  9. Spacecraft cemetery - Wikipedia

    en.wikipedia.org/wiki/Spacecraft_cemetery

    Earth's spacecraft cemetery is used as a site for spacecraft that have reached their lifetime limit due to fatigue, lack of propellant or other problems and must be retired. [16] Larger spacecraft too massive to burn up during re-entry into the Earth's atmosphere are controlled to crash / splash down in Earth's spacecraft cemetery, a location ...