astrophysics
Tagged Discussions
eileenleyva
@eileenleyva (27555)
• Philippines
13 Jul 21
American astrophysicist Carl Sagan once said -
'The universe is all that is us, or ever was, or ever will be.
Our contemplations of the cosmos stir us.
There's a tingling in the spine, a catch in the voice,
a faint sensation as...
4 responses •
5 people
Sharmila K.G.
@Sharmilakg (7)
• Hyderabad, India
23 Nov 16
If light rays do not encounter any obstacle, will the photons travel forever? Or will the energy run out?
1 response
redyellowblackdog
@redyellowblackdog (10629)
• United States
12 Apr 08
There is a scientist by the name of (what else?) Drake who created a simple equation for estimating the number of planets in our galaxy capable of interstellar communication.
If you want to skip my explanation and go right to...
1 response

