The Milky Way
In summer, in a clear place with dark night skies, an irregular glowing band arcs high overhead. The ancients likened […]
In summer, in a clear place with dark night skies, an irregular glowing band arcs high overhead. The ancients likened […]
To begin with, Earth is rotating on its axis at the familiar rate of one revolution per day. For those
How fast is Earth moving through space? Read More »
Most estimates place the number of stars in our galaxy at between 100 billion and 500 billion.
How many stars are in the Milky Way? Read More »
The Milky Way’s disk spans at least 100,000 light-years and probably contains several hundred billion stars, which makes our home
How big is our galaxy? Read More »
Quite a few. Most estimates place the number of galaxies at around 100 billion. Most of those galaxies are little
How many galaxies are there in the universe? Read More »