What is the relationship between dark matter and black holes? Dr. Paul Heckert explains MACHOs and WIMPs in the universe.
We hear about black holes a lot, but although they are often mentioned, they are seldom explained. For one thing, a black hole isn’t really a hole at all.
Does the death of a star affect a black hole’s evaporation rates? Dr. Paul Heckert explains astronomy theories to answer a reader’s question.
Fritz Zwicky was the first astronomer to propose the existence of dark matter, supernovas, neutron stars, galactic cosmic rays, gravitational lensing by galaxies, and galaxy clusters. However, he remains virtually unknown to the public to this day.
The Question: If the Earth is rotating on its axis and also revolving around the Sun, why don’t we feel any motion?
Will an unsung astronomy pioneer, Henrietta Swan Leavitt, finally get the credit she deserves? In 1895 Henrietta Swan Leavitt volunteered as an unpaid assistant at Harvard College Observatory. Her work on Cepheid variable stars led to the discovery of galaxies beyond our Milky Way, the expansion of the universe, and the big bang. Leavitt’s Law […]