NASA APOD Archive: April 1999
30 APODs from April 1999.
Ski Mars!
1 April 1999
Stars of NGC 206
2 April 1999
The Radio Sky: Tuned to 408MHz
3 April 1999
Hot Gas and Dark Matter
4 April 1999
The Launch of STARDUST
5 April 1999
NGC 6334: The Bear Claw Nebula
6 April 1999
Denizen of the Tarantula Nebula
7 April 1999
Apollo 12: Surveyor 3 and Intrepid
8 April 1999
WR 104: Pinwheel Star
9 April 1999
Canaries Sky
10 April 1999
Liftoff of Space Shuttle Columbia
11 April 1999
Nearby Spiral Galaxy NGC 4945
12 April 1999
The Case of the Missing Supernova
13 April 1999
The Backyard Universe
14 April 1999
Apollo 17's Moonship
15 April 1999
Upsilon Andromedae: An Extra-Solar System
16 April 1999
Gamma Ray Moon
17 April 1999
Moon Over California
18 April 1999
The Full Moon
19 April 1999
Candidates for a Hypernova
20 April 1999
The Nearest Stars
21 April 1999
Where is Upsilon Andromedae?
22 April 1999
Io Shadow
23 April 1999
Barsoom
24 April 1999
Mimas: Small Moon with a Big Crater
25 April 1999
USNO-A2.0 Catalog: A Digital Sky
26 April 1999
Introducing Comet Lee
27 April 1999
A Sundial for Mars
28 April 1999
NGC 2266: Old Cluster in the New General Catalog
29 April 1999
Solar Shock Wave
30 April 1999