3 ms·

When you read about astrophysics it sounds like we already have everything all figured out. It's kind of astounding that no man made object has ever actually le

• a_a_r_o_n 15y ago
  It's a big room, and we only recently found the window.
• megablast 15y ago
  The solar system is huge, Voyager still won't leave our classical definition of the solar system for many, many years.