... The cosmic explosion, an enormously bright gamma-ray burst (GRB), originated in a galaxy billions of light-years away and was detected by the BeppoSAX satellite on February 22. STS 1: First Shuttle Launch . ... Large Sunspot Group AR 9393 . ... The largest sunspot group of the past ten years crossed the surface of the Sun late last month and early this month. ... This week's stereo offering features the now famous Active Region 9393, the largest sunspot group in the last 10 years. ...