Q&A: X-ray Astronomy

Q:
Do you think that in the future the X-Ray telescope will replace the Hubble telescope?

A:
No, the two telescopes are complementary, not competitive. Hubble looks at optical or visible light from objects that typically have a temperature of a few thousand to many thousands of degrees. Chandra looks at X-ray light from objects that have a temperature of a few million to many millions of degrees.