July 09, 2008 Looking Out for Near Earth Objects Near Earth Objects (NEOs) are small solar system bodies that are infamous because their orbits take them near earth's orbit; sometimes they pass dangerously close to the earth or even collide with it.   Read More...

July 02, 2008 The North Star Polaris, the North Star, is not only renowned as a reliable beacon for early navigators.   Read More...

June 25, 2008 Objects Both Hot and Cold The sun's photosphere is hot, about 6000 kelvin, and so the sun emits about 70% of its light in the visible portion of the electromagnetic spectrum, and about one-quarter in the infrared.   Read More...