Nicknamed "blood moon," some ancient cultures regarded a total lunar eclipse as an ominous event. Today, this celestial phenomenon generates excitement and wonder.
Astronomers have discovered the first known dwarf planet to host a ring system. The egg-shaped world, called Haumea, is located in the Kuiper belt, beyond the orbit of Neptune.
Pluto is one of the most mysterious and controversial celestial objects in the solar system. Find out what most mystifies scientists and stargazers about this dwarf planet.
Research over the last 10 years has shown that sunquakes can be produced when solar flares—huge explosions of energy in the Sun’s atmosphere—impact and travel into the Sun. The quakes appear as circular ripples on the surface of the Sun.
For a 30 hora spell (Feb 7-8, 2012) the Solar Dynamics observatório captured plasma caught in a magnetic dance across the Sun's surface. The results closely resemble extreme tornadic activity on Earth.
There have been only a handful of X-flares since the beginning of new Solar Cycle 24. So far, all in 2011: Feb. 15 (X2), March 9 (X1), Aug. 9 (X7), Sept. 6 (X2), Sept. 7 (X2). Before these the last X-flare was on Dec.14, 2006, during Solar Cycle 23.
