New Delhi - Experts are yet to ascertain the composition of the mysterious "celestial" objects that fell on Chand Mohalla colony in Gandhi Nagar in east Delhi. Police sources said the material resembled a meteorite even as they were not ruling out the possibility of a prank. The incident took place on Sunday evening.

Police sources said incidents of meteorites falling on earth are rare. "It is too soon to arrive at a conclusion. The objects have been sent to FSL for examination and we will have to wait for the expert's take on the incident," said a police source. The incident, however, has had an impact on those who witnessed it.

"A strange black fireball first hit a cricket bat and then a towel. Both caught fire. Even the bike caught fire because of the fireball,'' said Indrapal Singh, whose household items were set on fire by the "celestial" objects.

Indrapal was watching television with his family when they heard a sound and rushed out. Moments later, several items - including a cricket bat and a towel - were on fire. "We brought out buckets and tried to douse the fire with water. However, it took us a while to bring it under control," he said. Police sources said they have collected the material from the site.

A meteorite is a natural object originating in outer space that survives impact with the earth's surface. Most meteorites, whether big or small, are derived from meteoroids, but they are also sometimes produced by the impact of asteroids. When a meteoroid enters the atmosphere, pressure causes the body to heat up and emit light, thus forming a fireball, also known as a meteor or shooting star. The term bolide refers to either an extraterrestrial body that collides with the earth, or to an exceptionally bright, fireball-like meteor regardless of whether it ultimately impacts the surface.

A meteorite on the surface of any celestial body is a natural object that has come from elsewhere in space.

Meteorites have been found on the moon and the Mars. Meteorites that are recovered after being observed as they travelled through the atmosphere or fell on earth are called falls. All other meteorites are known as finds. As of February 2010, there has been approximately 1,086 incidents of falls. In contrast, there have been over 38,660 well-documented meteorite finds.