---

• n  clouds of particles or gases occurring throughout interstellar space

News & Articles

---

• NASA serves up first glance at solar system's comet-like tail
  An illustration of the heliotail that trails our solar system's journey through the Milky Way. (Credit: NASA) While Earth spins around the sun at around 67,000 mph, the sun rotates around the Milky Way galaxy at a zippy 140 miles per second. With such a massive force moving through space, there's bound to be a trail of cosmic dust following behind, but it's always been a mystery -- until now ...
  July 11, 2013 - CNET