Latest 243 Ida Stories
A rare class of so-called “active asteroids” that appear to leave behind a tail of dust and debris similar to that of a comet are travelling so fast that they are essentially making themselves blow up, according to research published Friday in Astrophysical Journal Letters.
Researchers at the University of Tennessee at Knoxville have made a novel discovery that may potentially protect the world from future collisions with asteroids.
Small asteroids contain a layer of loose, unconsolidated rock and dust known as a regolith composed of centimeter-sized fragments and smaller particles.
An asteroid the size of a small office block is due to pass by Earth on Friday 15 February in one of the closest ‘near-misses’ in recent history.
Asteroids with moons, which scientists call binary asteroids, are common in the solar system. A longstanding question has been how the majority of such moons are formed.
Galileo Probe -- The Galileo probe was an unmanned probe sent by NASA to study the planet Jupiter and its moons. Named after the astronomer Galileo Galilei, it was launched on October 18 1989 by the Space Shuttle Atlantis and arrived at Jupiter on December 7 1995. Galileo's launch had been significantly delayed by the hiatus in Space Shuttle launches that occurred after the Space Shuttle Challenger disaster, and new safety protocols that were implemented as a result forced Galileo to use...
Dactyl Asteroid -- Dactyl, discovered in 1993, is a tiny asteroid (diameter 1.4 km) that orbits asteroid 243 Ida. The origins of Dactyl are unclear. The two main theories are that it and Ida formed at the same time, and that it was knocked loose by a later impact. Both have problems. Dactyl, found by the Galileo probe was the first asteroid moon discovered. ----- NASA Click here to learn more on this topic from eLibrary:
- Large; stout; burly.