How does Iago trick Cassio into confirming the fictional affair with Desdemona?

With whom does Cassio dine the night he is stabbed?

Which character recruits Iago to try to win Desdemona for himself?

Planetary nebula are associated with _______________.

When a low-mass star has exhausted all its hydrogen, the next stage is _____________.

An observer on a planet sees a spaceship approaching at 0.5c. A beam of light projected by the ship would be measured by this observer to travel at _____.

There have been over a hundred primodial black holes found both in the Milky Way and other galaxies.

Which is NOT a cause of short gamma ray bursts?

Most galaxies have at least one supermassive black hole.

Give the steps in order of the life cycle of a high mass star.