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• Meteoroid — A few shooting stars can be seen in this video from the ISS. A Perseid meteor (light streak somewhat to right of center of photo) and Milky Way. A meteoroid is a sand to …   Wikipedia

• meteor and meteoroid — ▪ astronomy Introduction   respectively, a glowing streak in the sky (meteor) and its cause, which is a relatively small stony or metallic natural object from space (meteoroid) that enters Earth s atmosphere and heats to incandescence. In modern… …   Universalium

• interplanetary dust particle — ▪ astronomy also called  micrometeoroid,  micrometeorite , or  cosmic dust particle   a small grain, generally less than a few hundred micrometres in size and composed of silicate minerals and glassy nodules but sometimes including sulfides,… …   Universalium

• Space debris — populations seen from outside geosynchronous orbit (GEO). Note the two primary debris fields, the ring of objects in GEO, and the cloud of objects in low earth orbit (LEO) …   Wikipedia

• Solar System — This article is about the Sun and its planetary system. For other systems, see planetary system and star system. For a list of physical and orbital statistics for the Solar System s largest bodies, see List of gravitationally rounded objects of… …   Wikipedia

• Asteroid-impact avoidance — Planetary defense redirects here. For defending against alien invasion in fiction, see alien invasion. Artist s impression of a major impact event. The collision between Earth and an asteroid a few kilometres in diameter releases as much energy… …   Wikipedia

• Comet Holmes — 17P/Holmes Comet Holmes on November 4, 2007, showing the blue ion tail on the right, taken from Hungary Discovery Discovery date: November 6, 1892 Alternate designations: 1892 V1; 1892 III; 1892f; 1899 L1; 1899 II; 1899d; …   Wikipedia

• Asteroid deflection strategies — are methods by which near Earth objects could be diverted, preventing potentially catastrophic impact events. A sufficiently large impact would cause massive tsunamis and/or, by placing large quantities of dust into the stratosphere blocking… …   Wikipedia

• Micrometeoroid — collected from the Antarctic snow A micrometeoroid is a tiny meteoroid; a small particle of rock in space, usually weighing less than a gram. A micrometeor or micrometeorite is such a particle that enters the Earth s atmosphere or falls to Earth …   Wikipedia

• Transient lunar phenomenon — A transient lunar phenomenon (TLP) or Lunar Transient Phenomena (LTP), refers to short lived lights, colors, or changes in appearance of the lunar surface. Claims of short lived phenomena go back at least 1,000 years, with some having been… …   Wikipedia

• Gegenschein — Zodiakallicht am Osthimmel im Sternbild Krebs vor der Morgendämmerung. Zu sehen sind u. a. auch Venus und Sternhaufen M44 Das Zodiakallicht (gr …   Deutsch Wikipedia