- Spring has arrived in the Northern Hemisphere, which means that birds are chirping, flowers are blooming — and fireballs are lighting up the sky, NASA says.
For some mysterious reason, the number of fireballs — dramatic meteors that blaze brighter than any planet when they burn up in Earth's atmosphere — peaks at this time of year. Full story:
- Cracks found in 3 more Southwest jets
Three more Southwest Airlines planes have been found with small, subsurface cracks similar to the ones that caused a jetliner to lose pressure and make a harrowing emergency landing in Arizona. Full story:
* U.S. Must Be Ready to Meet Asteroid Threat, White House Science Adviser Says... Cdn and American astronauts want world to start getting ready for asteroids...Our terrifyingly crowded solar system: New video reveals just how many asteroids are out there:
* Gigantic hidden planet could be hurling comets at the rest of the solar system... National Geographic (November 19, 2008): "High-energy electrons captured over Antarctica could reveal the presence of a nearby but MYSTERIOUS ASTROPHYSICAL OBJECT that's bombarding Earth with cosmic rays, researchers say"... Mysterious force hinders NASA spacecraft...Discovery (Aug 25, 2010): IS THE SUN EMITTING A MYSTERY PARTICLE?...LiveScience: Antarctica Experiment Discovers Puzzling Space Ray Pattern: