| 11 Dec 00 |  | IC 443 | A supernova remnant with a newly discovered neutron star 5,000 light years from Earth. |
| 04 Dec 00 |  | Abell 1795 | A cluster of galaxies with a prominent 'cooling flow'. |
| 09 Nov 00 |  | Orion Trapezium | Chandra Observatory Uncovers Hot Stars In The Making. |
| 08 Nov 00 |  | Circinus X-1 | Chandra Discovers the X-ray Signature of a Powerful Wind from a Galactic Microquasar |
| 08 Nov 00 |  | rho Ophiuchi molecular cloud | X-Ray Snapshots Capture the First Cries of Baby Stars |
| 06 Nov 00 |  | Quasar RX J0911.4+0551 | Flickering Quasar may help Chandra Measure the Expansion Rate of the universe |
| 06 Nov 00 |  | Cygnus A | A galaxy, some 700 million light years away, with a central black hole. |
| 06 Nov 00 |  | 3C273 | A quasar over 3 billion light years from Earth. |
| 03 Nov 00 |  | GRB 991216 | Gamma Ray Burst observed on December 18, 1999. |
| 18 Oct 00 |  | Zeta Orionis | O-star in the Orion constellation. |
| 26 Sep 00 |  | Sirius A & B | White dwarf and companion star resolved. |
| 12 Sep 00 |  | M82 Black Hole | Mid-mass black hole found 600 light years from galaxy center. |
| 16 Aug 00 |  | Antennae | Supperbubbles and black holes in colliding galaxies. |
| 27 Jul 00 |  | Comet C/1999 S4
(LINEAR) | X-ray image of cometary atmosphere. |
| 11 Jul 00 |  | Brown Dwarf LP 944-20 | X-ray flare from a brown dwarf. |
| 27 Jun 00 |  | Cassiopeia A | Elements mapped in Cas A SNR. |
| 06 Jun 00 |  | Vela Pulsar | X-ray image of rings and jets in the compact nebula. |
| 06 Jun 00 |  | BD+30-3639 | Hot bubble imaged in planetary nebula. |
| 06 Jun 00 |  | Pictor A | X-ray jet extends from active galaxy toward hot spot. |
| 05 Jun 00 |  | NGC 4151 | X-ray image of large gas cloud near a black hole. |
| 01 Jun 00 |  | Perseus A | Features revealed in the core of the galaxy cluster. |
| 25 May 00 |  | NGC 3783 | X-ray spectrum probes black hole environs. |
| 17 May 00 |  | HDFN Deep Field | X-ray sources in the Hubble Deep Field North. |
| 11 May 00 |  | Supernova 1987A | X-ray image of a young supernova shock wave. |
| 25 Apr 00 |  | Cygnus X-3 | Scattering halo of Cygnus X-3 provides new way to measure distance. |
| 10 Apr 00 |  | E0102-72.3 | X-ray,optical,radio composite image of a supernova remnant. |
| 03 Apr 00 |  | CXO 0312 Fiore P3 | Newly discovered powerful X-ray source in a distant galaxy. |
| 20 Mar 00 |  | Type 2 Quasar | Image of veiled black hole. |
| 01 Mar 00 |  | Abell 2142 | A cluster of galaxies in the constellation Corona Borealis. |
| 17 Feb 00 |  | NGC 5548 | X-ray spectrum of the central region of the galaxy NGC 5548. |
| 14 Jan 00 |  | M82 | The nearest starburst galaxy at a distance of 11 million light years from Earth. |
| 14 Jan 00 |  | M31
(Andromeda Galaxy) | Our nearest neighbor spiral galaxy at a distance of two million light years. |
| 14 Jan 00 |  | Galactic Center
(Sagittarius A*) | The innermost 10 light years at the center of our galaxy. |
| 14 Jan 00 |  | E0102-72.3 | A supernova remnant in the constellation Tucana. |
| 14 Jan 00 |  | Orion Nebula | Cluster of young stars in the Orion Nebula. |
| 13 Jan 00 |  | Deep Field in Canes Venatici | Chandra Image of Deep Field in Canes Venatici |
