The Big Picture

Light speed
186,000 miles per second
674 million miles per hour

USA coast-to-coast
3000 miles
6 hours by jet
0.02 second at light speed

Earth to moon
239,000 miles
1.24 seconds at light speed

Sun to Pluto
3.6 billion miles
6.5 hours at light speed

Light year (ly)
5.884 trillion miles

Nearest star within our Milky Way Galaxy
Proxima Centauri
4 years at light speed

Number of stars in our galaxy
100 million

Diameter of our Milky Way Galaxy
90,000 years at light speed

Nearest galaxy to our own Milky Way
2,249,400 years at light speed

Number of galaxies detected by the Hubble Space Telescope
in a patch of sky the size of a grain of sand held at arm's lenth.
100 million

There's a reason they call it "space."