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Redshift
Redshift is the phenomenon where light from distant galaxies is stretched to longer, redder wavelengths due to the expansion of the universe. It serves as a key observational evidence for the universe's ongoing expansion.
Source: science.nasa.gov
APODs including "Redshift"
CMB Dipole: Speeding Through the Universe
28/01/2001
Spiral Galaxy NGC 3310 in Ultraviolet
17/01/2001
Disorder in Stephan's Quintet
13/11/2000
The Lyman Alpha Forest
12/11/2000
The Farthest Explosion Yet Measured
19/10/2000
A Slice of the Universe with 2dF
14/06/2000
Redshift 5.8: A New Farthest Quasar
19/04/2000
A GRB 000301C Symphony
14/03/2000
COBE Dipole: Speeding Through the Universe
27/06/1999
GRB 990510: Another Unusual Gamma Ray Burst
26/05/1999
Galaxy And Gamma-ray Burst
25/01/1999
The Year of Distant Supernovae
31/12/1998
High Redshift Quasars
11/12/1998
A3827: Galactic Cannibal
31/08/1998
APM 08279+5255: The Brightest Object Yet Known
18/08/1998
GRB 980703: A Reassuring Redshift
13/07/1998
The Sloan Digital Sky Survey Telescope
17/06/1998
A Gamma-Ray Burst Supernova?
08/05/1998
A Baby Galaxy
24/03/1998
Rumors of a Strange Universe
02/03/1998
The Lyman Alpha Forest
24/02/1998
Disorder in Stephan's Quintet
10/01/1998
A Universe in a Box
21/08/1997
Behind CL1358+62: A New Farthest Object
31/07/1997
GRB970508 Delivers Predicted Radio Emission
21/05/1997
Signed, "A Black Hole"
16/05/1997
Optical Transient Near GRB970508 Shows Distant Redshift
13/05/1997
Jets From SS433 Credit:
13/04/1997
COBE Dipole: Speeding Through the Universe Credit:
08/03/1997
Disorder in Stephan's Quintet
13/12/1996