#Relativity #TimeDilation #BlackHoles
A point of light left a star before dinosaurs walked the earth. For that point of light, the entire journey happened in an instant, zero seconds, arriving here exactly as young as the moment it was born, even after thirteen billion years passed for us.
Today we ride beside that impossible traveler. We will stand at the edge of a black hole, where a falling clock freezes for us and keeps ticking for itself. We will watch satellites correct their clocks in orbit so your phone can find your exact location. We will meet a scientist who bought an airplane ticket for an atomic clock, and starlight older than every fossil on this planet, still crossing the dark toward your eyes right now.
If a universe this strange deserves your attention, hit subscribe before we go further.
Grab hold of something solid. Time itself is about to bend.
Sources:
a. https://www.britannica.com/science/Mi...
b. https://www.nist.gov/atomic-clocks/a-...
c. https://physics.aps.org/story/v16/st1
d. https://science.nasa.gov/blogs/webb/2...
e. https://www.ligo.caltech.edu/page/pre...
f. https://news.fnal.gov/2019/03/waiting...
g. https://www.iaea.org/newscenter/news/...
h. https://www.nobelprize.org/prizes/phy...
#Physics #Space #Science #Einstein #Universe #Astronomy #Cosmos #NASA