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  2. List of unsolved problems in astronomy - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Since 2003, Jean-Pierre Luminet, et al., and other groups have suggested that the shape of the universe may be the Poincaré dodecahedral space. Is the shape unmeasurable, the Poincaré space, or another 3-manifold? Cosmic inflation: Is the theory of cosmic inflation in the very early universe correct? If so, what are the details of this epoch?

  3. Glavkosmos - Wikipedia

    en.wikipedia.org/wiki/Glavkosmos

    Glavkosmos (Russian: Главкосмос) is a Russian launch service provider and subsidiary of the State Corporation for Space Activities "Roscosmos". [1] [2] In the Soviet Union, Glavkosmos was the prime authority for implementing cooperative agreements with foreign bodies, with activities including commercial utilisation of Soviet systems and flying foreign cosmonauts aboard Soviet ...

  4. Gerard K. O'Neill - Wikipedia

    en.wikipedia.org/wiki/Gerard_K._O'Neill

    Gerard Kitchen O'Neill (February 6, 1927 – April 27, 1992) was an American physicist and space activist.As a faculty member of Princeton University, he invented a device called the particle storage ring for high-energy physics experiments. [1]

  5. GK Persei - Wikipedia

    en.wikipedia.org/wiki/GK_Persei

    GK Persei (also Nova Persei 1901) was a bright nova first observed on Earth in 1901. It was discovered by Thomas David Anderson , an Edinburgh clergyman, at 02:40 UT on 22 February 1901 when it was at magnitude 2.7.

  6. Alcubierre drive - Wikipedia

    en.wikipedia.org/wiki/Alcubierre_drive

    The Alcubierre drive ([alkuˈβjere]) is a speculative warp drive idea according to which a spacecraft could achieve apparent faster-than-light travel by contracting space in front of it and expanding space behind it, under the assumption that a configurable energy-density field lower than that of vacuum (that is, negative mass) could be created.

  7. Space technology - Wikipedia

    en.wikipedia.org/wiki/Space_technology

    Space technology is technology for use in outer space. Space technology includes space vehicles such as spacecraft , satellites , space stations and orbital launch vehicles ; deep-space communication ; in-space propulsion ; and a wide variety of other technologies including support infrastructure equipment, and procedures .

  8. Chandrayaan-1 - Wikipedia

    en.wikipedia.org/wiki/Chandrayaan-1

    As planned, the Moon Impact Probe impacted the lunar south pole at 15:01 UTC on 14 November 2008. ISRO was the fifth national space agency to reach the surface of the Moon. Other national space agencies to have done so prior were the former Soviet Union in 1959, [14] the United States in 1962, [15] Japan in 1993, [16] and ESA in 2006. [17] [19 ...

  9. Gravity - Wikipedia

    en.wikipedia.org/wiki/Gravity

    In physics, gravity (from Latin gravitas 'weight' [1]) is a fundamental interaction primarily observed as mutual attraction between all things that have mass.Gravity is, by far, the weakest of the four fundamental interactions, approximately 10 38 times weaker than the strong interaction, 10 36 times weaker than the electromagnetic force and 10 29 times weaker than the weak interaction.

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