1 Gly = 1,000,000,000 light years or 9.461*1026 cm.
1 Gyr = 1,000,000,000 years.
1 Mpc = 1,000,000 parsecs = 3.08568*1024 cm,
or 3,261,566 light years.
Tutorial:
Part 1 |
Part 2 |
Part 3 |
Part 4
FAQ |
Age |
Distances |
Bibliography |
Relativity
See the advanced and light travel time versions of the calculator.
James Schombert has written a Python version of this calculator.
© 1999-2016 Edward L. Wright. If you use this calculator while preparing a paper, please cite Wright (2006, PASP, 118, 1711). Last modified on 07/23/2018 23:22:14