Guide to Space
Why is Uranus on its Side?
The Earth’s tilt is nothing compared to Uranus, which has been flipped right over on its side. What could have…
The Constellation Camelopardalis
Welcome back to Constellation Friday! Today, in honor of our dear friend and contributor, Tammy Plotner, we examine the Caelum…
How Do We Settle on Mercury?
Though it is not considered as such, Mercury is actually a viable candidate for colonization - if you can get…
Messier 21 (M21) – The NGC 6531 Open Star Cluster
In the Sagittarius Constellation, near the ecliptic of the Milky Way Galaxy, lies the faint and compact open star cluster…
The Constellation Caelum
Located in the southern skies, far from the plain of the Milky Way, is the faint Caelum constellation, which represents…
What Is Bohr’s Atomic Model?
The Bohr atomic model (sometimes known as the Rutherford-Bohr atomic model) was a major milestone in the development of modern…
What is Earth’s Axial Tilt?
In both the course of a year, and over the course of millennia, Earth experiences variations due to the fact…
How Far is Mars from the Sun?
Mars is not only further from the Sun than Earth, but has an eccentric orbit that leads to a great…
What are Quark Stars?
Astronomers have theorized there could be an intermediate stage between neutron stars and black holes called quark stars. Are they…
Messier 20 (M20) – The Trifid Nebula
Located in the southern Sagittarius constellation is the Trifid Nebula, a bright star-forming region and combination nebula