Ask An Astronomer Anything About Astronomy (X)

As always, find the complete set of questions on the  Q&A page.

1) Do gravitational waves travel throughout the entire Universe or do they eventually stop ?
They keep going like the Energizer bunny.

2) I thought scientists could already see back to the first trillionth of a second after the Big Bang ?
Nope.

3) What's the latest on gravitational waves ?
Habeas corpus.

4) If two gravitational waves collided, would they cancel each other out ?
No.

5) Do rogue stars pose a threat to our galaxy ?
No.