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.
Eris is the largest known dwarf planet in our solar system. It is a little larger than Pluto. Eris is about 2400 kilometers wide. Eris was first found by a team of astronomers at Palomar Observatory in California. Mike Brown and his team found Eris in 2003.It was not until 2005 that Eris was identified as another possible planet in our solar system.In 2006, astronomers decided that Eris should not be called a planet.ike Brown and his team found Eris in 2003. It was not until 2005 that Eris was identified as another possible planet in our solar system. In 2006, astronomers decided that Eris should not be called a planet.