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.
New dwarf planet found sneaking through the inner Oort Cloud. A small collection of bodies now orbits where they couldn't possibly have formed. An artist's depiction of Sedna, the first of the objects from this class of bodies to have been discovered. A new dwarf planet-like body has been found on the outer edges of the Solar System.