If I could travel at the speed of light
If I could travel at the speed of light (9,461,000,000,000 km per year) it would take me:
0.13 seconds to travel once around the Equator
1.3 seconds to reach the Moon
8.3 minutes to reach the nearest star, the Sun
4 hours to reach Neptune, the Sun’s outermost planet
4.3 years to reach Alpha Centauri, the nearest star, apart from the Sun
370 years to reach the bright open star cluster Pleiades (M45)
710 years to reach the Helix planetary nebula, a dying star (NGC7293)
1,350 years to reach the Orion Nebula (M42)
15,800 years to reach the globular star cluster Omega Centauri (NGC5139)
25,900 years to reach the black hole in the middle of our Milky Way galaxy (Sgr A*)
100,000 years to cross our Milky Way galaxy
157,000 years to reach the small local galaxy the Large Magellanic Cloud (LMC)
2,540,000 years to reach the large local galaxy in Andromeda (M31)
2,400 million years to reach the bright magnitude 12.9 quasar 3C 273
All of these are visible in binoculars or a small telescope except the black hole, but don't look at the Sun.
Last edited by glenc; 12-08-2011 at 09:57 AM.
|