Chandra X-ray Center

Chandra Cycle 28 Cycle 28 Target List Released

The list of targets recommended by the Cycle 28 Peer Review is now posted.

An additional announcement will be made when the proposal and target information have been incorporated into the online observation catalog.

For more information, see the full announcement.

08/12/26

HRC Anomaly Notice

After a successful checkout of the HRC shared preamplifiers and processing electronics, the CXC resumed observations with the HRC-I in January, 2026. Investigation of the HRC-S anomaly continues, and submission of HRC-S proposals for Cycle 28 are encouraged.

3/16/26

CIAO 4.18, Sherpa 4.18, CALDB 4.12.3, SAOImageDS9 8.7b2, and MARX 6.0.1 Released

The Chandra X-ray Center (CXC) is pleased to announce the release of the following new software packages:
CIAO 4.18
Sherpa 4.18
CALDB 4.12.3
SAOImageDS9 v8.7b2
MARX 6.0.1

For more information, see the full announcement.

12/16/25

Chandra Spring Newsletter

Chandra
Spring 2026
Newsletter

Chandras Dynamic Universe Workshop

Discovery Awaits

Discovery Awaits!

Chandra science
coming in 2026

A Cosmic Heart Where New Stars Thrive

NASA Telescopes Spot Surprisingly Mature Cluster in Early Universe

NASA's Chandra Releases Deep Cut From Catalog of Cosmic Recordings

Supernova Remnant Video From NASA's Chandra Is Decades in Making

NASA's Chandra Rings in New Year With Champagne Cluster

Cosmic Holiday Greetings From NASA's Chandra X-ray Observatory

Bright Blue Cosmic Outbursts Likely Caused by Large Black Holes Shredding Massive Companions

NASA's Chandra Finds Small Galaxies May Buck the Black Hole Trend

Painting Galaxy Clusters by Numbers (and Physics)

Before Fall Leaves, See Seasonal Offerings from NASA's Chandra

Proposer

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Sherpa on Github

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