An overview of the Chandra mission and goals, Chandra's namesake, top 10 facts.
Classroom activities, printable materials, interactive games & more.
Overview of X-ray Astronomy and X-ray sources: black holes to galaxy clusters.
All Chandra images released to the public listed by date & by category
Current Chandra press releases, status reports, interviews & biographies.
A collection of multimedia, illustrations & animations, a glossary, FAQ & more.
A collection of illustrations, animations and video.
Chandra discoveries in an audio/video format.
Q&A: Normal Stars, White Dwarf Stars, and Star Clusters

Q:
What are the brightest stars in order from brightest to least in the constellation of orion?

A:
The brightest stars in a constellation are listed alphabetically, used the Greek alphabet. In order of brightness, they are alpha Orionis, also known as Betelgeuse, beta Orionis, a.k.a. Rigel, gamma Orionis, a.k.a. Bellatrix, delta Orionis, a.k.a. Mintaka, epsilon Orionis, a.k.a. Alnilam, zeta Orionis, a.k.a. Alnitak, eta Orionis, theta Orionis, a famous multiple star called the Trapezium in the heart of the Orion Nebula.

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