direct orbit
61Satellite television — List of digital television broadcast standards DVB standards (Europe) DVB S (satellite) DVB S2 DVB T (terrestrial) DVB T2 DVB C …
62Manned mission to Mars — Concept for NASA Design Reference Mission Architecture 5.0 (2009) A manned mission to Mars has been the subject of science fiction, engineering, and scientific proposals throughout the 20th century and into the 21st century. The plans comprise… …
63Moon landing conspiracy theories — Astronauts Buzz Aldrin and Neil Armstrong in NASA s training mockup …
64Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun …
65Stars and planetary systems in fiction — The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction. Contents 1 Overview 1.1 The brightest stars …
66Space Preservation Act — The Space Preservation Act was a series of four bills introduced to the United States House of Representatives designed to preserve the cooperative, peaceful uses of space for the benefit of all humankind. Space Preservation Act of 2005.… …
67eclipse — eclipser, n. /i klips /, n., v., eclipsed, eclipsing. n. 1. Astron. a. the obscuration of the light of the moon by the intervention of the earth between it and the sun (lunar eclipse) or the obscuration of the light of the sun by the intervention …
68particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …
69Discoveries of extrasolar planets — See also: List of extrasolar planet firsts Number of extrasolar planet discoveries per year as of 10 July 2011, with colors indicating method of detection …
70asteroid — asteroidal, adj. /as teuh royd /, n. 1. Also called minor planet. Astron. any of the thousands of small bodies of from 480 miles (775 km) to less than one mile (1.6 km) in diameter that revolve about the sun in orbits lying mostly between those… …
