Light Is Slow — You Just Don't Live Long Enough to Notice
Image: NASA/ESA/S. Beckwith (STScI)/HUDF Team. The Hubble Ultra Deep Field: nearly 10,000 galaxies in a patch of sky smaller than a grain of sand held...
Journal
Journal
Two Machines Are Still Moving 47 Years After We Let Them Go
Voyager 1 and 2 have been traveling for 47 years and are now in interstellar space. The Golden Record they carry may outlast the Earth...