The extragalactic background light (EBL) is pivotal for comprehending the universe. It offers insights into cosmic evolution, matter distribution, and early universe conditions, impacting astronomical observations and advancing our knowledge of space.
Pulsars emit deadly radiation, disintegrating DNA and making them dangerous. Surprisingly, some have planets orbiting them, defying current theories.
Recently, on August 5, 2011, NASA launched a new space probe, called Juno, headed towards Jupiter. When it reaches its destination the spacecraft will be placed in a polar orbit in order to study the planet's composition, gravity field, magnetic field, polar magnetosphere, and the deep winds of its atmosphere.
The space elevator is a gigantic concept and as such it has many safety issues that would have to be resolved before construction begins. A space elevator would present a navigational hazard, both to aircraft and spacecraft.