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  2. Transit of Venus - Wikipedia

    en.wikipedia.org/wiki/Transit_of_Venus

    A transit occurs when Venus reaches conjunction with the Sun whilst also passing through the Earth's orbital plane, and passes directly across the face of the Sun. [citation needed] [note 1] Sequences of transits usually repeat every 243 years, after which Venus and Earth have returned to nearly the same point in their respective orbits.

  3. File:GOES-15 SXI 2012 VenusTransit.ogv - Wikipedia

    en.wikipedia.org/wiki/File:GOES-15_SXI_2012...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more

  4. List of satellite pass predictors - Wikipedia

    en.wikipedia.org/wiki/List_of_satellite_pass...

    N2YO provides real time tracking and pass predictions with orbital paths and footprints overlaid on Google Maps. [6] It features an alerting system that automatically notifies users via SMS and/or email before International Space Station crosses the local sky. The N2YO.com system powers ESA's, Space.com's and many other's satellite tracking web ...

  5. Delta-v budget - Wikipedia

    en.wikipedia.org/wiki/Delta-v_budget

    Launch to LEO—this not only requires an increase of velocity from 0 to 7.8 km/s, but also typically 1.5–2 km/s for atmospheric drag and gravity drag [citation needed] Re-entry from LEO—the delta-v required is the orbital maneuvering burn to lower perigee into the atmosphere, atmospheric drag takes care of the rest.

  6. Orbital period - Wikipedia

    en.wikipedia.org/wiki/Orbital_period

    For instance, a small body in circular orbit 10.5 cm above the surface of a sphere of tungsten half a metre in radius would travel at slightly more than 1 mm/s, completing an orbit every hour. If the same sphere were made of lead the small body would need to orbit just 6.7 mm above the surface for sustaining the same orbital period.

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  8. Planetary transits and occultations - Wikipedia

    en.wikipedia.org/wiki/Planetary_transits_and...

    The next time a mutual planetary transit or occultation will happen (as seen from Earth) will be on 22 November 2065 at about 12:43 UTC, when Venus near superior conjunction (with an angular diameter of 10.6") will transit in front of Jupiter (with an angular diameter of 30.9"); however, this will take place only 8° west of the Sun, and will therefore not be visible to the unaided/unprotected ...

  9. On November 16, Venus leaves moody Scorpio and enters free-spirited Sagittarius. Venus in Sagittarius is a transit that astrologers describe as passionate-inducing. Romance goes hand-in-hand with ...