Administration: Individual. The DAB-4 is a revision of one of the most popular individual achievement tests available. Its 8 subtests identify studentsâ strengths and weaknesses across important areas of school achievement. A supplemental manual shows how to probe student responses to obtain information about studentsâ thinking processes and problem-solving strategies.
In 1992, the first evidence of a planetary system other than our own was discovered, orbiting the pulsar PSR B1257+12. Three years later, 51 Pegasi b, the first extrasolar planet around a Sunlike star, was discovered.
by Fraser Cain on November 27, 2009. Even in ancient times astronomers knew of 5 planets: Mercury, Venus, Mars, Jupiter and Saturn. But it wasnât until the last few hundred years that the next planet was finally discovered â Uranus.So when was Uranus discovered? Uranus was found on March 13th, 1781 by Sir William Herschel of England.Uranus, seen by Voyager 2. Image credit: NASA/JPL. You might be surprised to know that Uranus is actually bright enough to be seen with the unaided eye.e thought he might have found a nebular star or a new comet. When he presented his findings to the Royal Society, the Astronomer Royal Nevil Maskelyne discovered that it actually had a planet like orbit and didnât seem to posses a tail. It was the first new planet discovered in history.