Hubble Parameter
Basic cosmology This discussion will cover basic geometry of the cosmos. I will cover expanding space, Hubble law, three possible versions of the Big Bang Theory from two points of […]
Astronomy
Triffid Nebula M20
This nebula was discovered by Charles Messier in 1764. It is a combination of an open cluster and emission nebula. The name means “divided into three lobes”. In the center […]
Whirlpool Galaxy M51
Whirlpool Galaxy Also known as M51a and NGC5194. The smaller galaxy in the lower right is a companion galaxy known as NGC5195 or M51b. First discovered by Charles Messier in […]
Astronomical Events
How to determine local sunrise and sunset
Sunrise Sunset A question many people ask me is how do you calculate local sunrise and sunset. In order to proceed you need an understanding of how the earth moves […]