0
Angliholic Posted 19 years ago
Grammar

look back in time

0The large millimeter Telescope, being built at athe top of Mexico's 4,850-meter hig Sierra Negra, will be able to01u00 look 13.7 billion years back in time02u00. That is further back than any other known telescope.02br
02br
00What is the logic here? How could we look back in time through this telescope? Thanks.0-
  

Top answer

0 Light travels at 300,000 metres per second. If you look back far enough you can see the past. Everything you see from Earth is from the past.

— Marvin A.

  • 0 Light travels at 300,000 metres per second.
  • If you look back far enough you can see the past.
  • Everything you see from Earth is from the past.
  • 0-
Free · every Monday

Get the Weekly English Kit 📬

New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.

4 Answers
0
0 Light travels at 300,000 metres per second. If you look back far enough you can see the past. Everything you see from Earth is from the past. If the sun exploded, we wouldn't even be aware that anything was wrong for several minutes, until the light reached us--and we wouldn't experience it before then either because nothing can be accelerated faster than the speed of light.02br
0
0
0
0 Thanks, Marvin. That makes sense to me now; you're knowledgeable. 0-
0
0
0I hope I'm right then. 05000 I haven't studied that stuff in years. 05100 I hope I didn't mix it up, lol.010id111id10
0
0
0 To tell the truth, there is no present moment; things are in the past or in the future. 0-
0

Related Questions