rogue stars

Gaia Sees Stars Out in Deep Space, Flying Between Galaxies

Gaia Sees Stars Out in Deep Space, Flying Between Galaxies

In December of 2013, the European Space Agency (ESA) launched the Gaia mission. Since that time, this space observatory has been busy observing over 1 billion astronomical objects in our galaxy and beyond – including stars, planets, comets, asteroids, quasars, etc. – all for the sake of creating the largest and most precise 3D space catalog ever made.

Planets Could Travel Along With Rogue 'Hypervelocity' Stars, Spreading Life Throughout The Universe

Planets Could Travel Along With Rogue 'Hypervelocity' Stars, Spreading Life Throughout The Universe

Back in 1988, astronomer Jack Hills predicted a type of “rogue”star might exist that is not bound to any particular galaxy. These stars, he reasoned, were periodically ejected from their host galaxy by some sort of mechanism to begin traveling through interstellar space.