NASA APOD Archive: September 1999
30 APODs from September 1999.
1999 JM8: A Rock Too Close
1 September 1999
Eclipse Over The Mountain
2 September 1999
Venus Falls Out of the Evening Sky
3 September 1999
The Water Vapor Channel
4 September 1999
The Universe Evolves
5 September 1999
HCG 87: A Small Group of Galaxies
6 September 1999
Water Found in Space Rock
7 September 1999
A Superior Conjunction Of Mercury
8 September 1999
Comet Hale-Bopp Over the Superstition Mountains
9 September 1999
Cassini Images The Moon
10 September 1999
The Annotated Galactic Center
11 September 1999
Stonehenge: Ancient Monument to the Sun
12 September 1999
Supernova Remnant N132D in X-Rays
13 September 1999
The Colorful Orion Nebula
14 September 1999
The Big Corona
15 September 1999
The Incredible Expanding Cat's Eye
16 September 1999
M3: Half A Million Stars
17 September 1999
Mercury Astronauts and a Redstone
18 September 1999
Interstellar Dust Bunnies of NGC 891
19 September 1999
Io in True Color
20 September 1999
The Quintuplet Star Cluster
21 September 1999
Halos Around the Ring Nebula
22 September 1999
Equinox and Eruptive Prominence
23 September 1999
Cometary Globules In Orion
24 September 1999
Twistin' By The Lagoon
25 September 1999
M83: A Barred Spiral Galaxy
26 September 1999
Our Galaxy in Stars, Gas, and Dust
27 September 1999
Mystery Object Explained
28 September 1999
The Crab Nebula in X-Rays
29 September 1999
Massive Stars Of 30 Doradus
30 September 1999