We Live in A Thin Milky Way Galaxy, Astrophysicist Neil deGrasse Tyson Explains
The Milky Way galaxy, which houses about 300-billion-star systems including our solar system is estimated to be 100,000 light years across. This implies that our home galaxy is about 1,000,000,000,000,000,000 km (about 100,000 light-years or about 30 kpc) across. Hence, many people assume that a galaxy of about this size is extremely massive and thick […]
We Live in A Thin Milky Way Galaxy, Astrophysicist Neil deGrasse Tyson Explains Read More »