SOHO discovers its 1,500th comet

NASA To Discuss Conditions On And Surrounding The Sun
NASA will hold a media teleconference Tuesday, Sept. 23, at 12:30 p.m. EDT, to discuss data from the joint NASA and European Space Agency Ulysses mission that reveals the sun's solar wind is...

Veteran Astronaut Carl Walz Leaves NASA
NASA astronaut Carl Walz is leaving the agency to take a job in the private sector.

Next NASA Mars Mission Rescheduled for 2011
NASA's Mars Science Laboratory will launch two years later than previously planned in the fall of 2011.

Musicophilia: Tales of Music and the Brain, Revised...
Revised and ExpandedWith the same trademark compassion and erudition he brought to The Man Who Mistook His Wife for a Hat, Oliver Sacks explores the place music occupies in the brain and how...

Chemistry
Authors Steven and Susan Zumdahl offer all the elements instructors need for their general chemistry course. They bring a conceptual approach to chemistry and integrate problem-solving skills...