When was the last asteroid to hit the earth?

Answer 1

The most recent impact large enough to cause a crater was in 1947 at a site called Sikhote-Alin. This is in the far east of Russia, about 440 km north-east of Vladivostok, and there is a whole Wikipedia page about it (below).

The second most recent known impact was in Saudi Arabia, at a place called Wabar. The Wikipedia page (below) says its date is uncertain, between 100 and 250 years ago, but a more scientific web site maintained by the University of New Brunswick gives its age as 140 years.

The UNB web site (below) lists another 172 known impact sites, quite a few of whose dates are only given as "less than" some quite small figure, including six which are probably newer than the famous 50,000-year-old Barringer crater in Arizona. These are at Haviland, Kansas; Sobolev, Russia; Campo del Cielo, Argentina; Macha, Russia; Morasko, Poland; and Odessa, Texas. The site has pictures of some of these relatively recent craters, but not all of them.

Answer 2

When is it an Asteroid and when is a Meteor?

A Meteor supposedly landed in Peru last moth but there are suspicions it was a crashed spy satellite.

There seems to have been a fall in "La Mancha" Spain, on May 10, 2007. Total known weight ~380 grams

Check out 2nd site for reports

Answer 3

http://www.psi.edu/projects/siberia/siberia.html