galaxy and black holes

Stars form from __, which are clouds of interstellar gas and dust

Nebulae

Most of interstellar space is close to a ___, that lacks matter, but space becomes denser in some areas

Vacuum

__ includes types of energy that are visible and others that are not visible

Electromagnetic radiation

A __ like the Milky Way is a large group of stars, dust, dark matter, and gas

Galaxy

An __ galaxy forms an oval or egg shape

Elliptical

Near the end of a starts life cycle the star may explode in a ___

Supernova

The remnants of a star may collapse themselves to form a __

Black hole

Scientists can use a __ to detect waves from objects in space

Radio telescope

Gravity can compress the core of a star into a __, a point that has essentially no volume but is infinitely dense

Singularity

The __ of a black hole blocks the exit of light and matter beyond that boundary

Event horizon