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  2. Lists of organisms by population - Wikipedia

    en.wikipedia.org/wiki/Lists_of_organisms_by...

    More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]

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

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

    In order to leave the Solar System, the probe needs to reach the local escape velocity. Escape velocity from the sun without the influence of Earth is 42.1 km/s. In order to reach this speed, it is highly advantageous to use as a boost the orbital speed of the Earth around the Sun, which is 29.78 km/s.

  4. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.

  5. 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.

  6. Vredefort impact structure - Wikipedia

    en.wikipedia.org/wiki/Vredefort_impact_structure

    The Vredefort impact structure is the largest verified impact structure on Earth. [1] The crater, which has since been eroded away, has been estimated at 170–300 kilometres (110–190 mi) across when it was formed.

  7. Tips pour in over 5,000 drone sightings. Reason to worry ...

    www.aol.com/tips-pour-over-5-000-131033198.html

    The Department of Homeland Security issued a statement saying no threat to public safety or national security has been found thus far.

  8. Extinction event - Wikipedia

    en.wikipedia.org/wiki/Extinction_event

    When the Sun becomes 10% brighter in about a billion years, [192] Earth will suffer a moist greenhouse effect resulting in its oceans boiling away, while the Earth's liquid outer core cools due to the inner core's expansion and causes the Earth's magnetic field to shut down. In the absence of a magnetic field, charged particles from the Sun ...

  9. List of spaceflight records - Wikipedia

    en.wikipedia.org/wiki/List_of_spaceflight_records

    The Apollo 10 crew (Thomas Stafford, John W. Young and Eugene Cernan) achieved the highest speed relative to Earth ever attained by humans: 39,897 kilometers per hour (11,082 meters per second or 24,791 miles per hour, about 32 times the speed of sound and 0.0037% of the speed of light). [14]