Sam and Brett. What Is A Star? Mass of gas together held by gravity that is self luminated.
The Big Bang
Black hole For large enough masses, as far as we know, nothing is stiff enough to stop the collapse. It continues down to a singularity: a defect in space.
Unit 2: Very Small and Far Away: Measuring and Observing Extremes Resembling a gigantic hubcap in space, a 3,700-light-year- wide dust disk encircles a.
The Big Bang A Timeline. What do you think you know about the Big Bang? Take a couple of minutes to write down what you know, or think you know about.
