- What made the double flash of gamma rays the signature that proved a neutrino collision had occurred?
X-Ray and High-Energy Astronomy
Observing the universe through X-rays and gamma rays.
- Why can't X-rays be focused with conventional mirrors, and how did grazing-angle mirrors solve the problem?
- What new kinds of astronomical objects did the Einstein Observatory reveal that earlier X-ray detectors could not?
- How did the Einstein Observatory differ from Riccardo Giacconi's earlier rocket-borne X-ray detectors?
- Why must X-ray telescopes operate above the Earth's atmosphere rather than on the ground?
- What was the first object Chandra imaged, and why did its resolution mark such an advance?
- How does Chandra's elliptical orbit help it avoid interference from Earth's radiation belts?
- Why is the observatory named after Subrahmanyan Chandrasekhar?
- How did Riccardo Giacconi's X-ray telescopes change what astronomers could see in the cosmos?
- How did Mars Odyssey's gamma-ray spectrometer detect water ice beneath the Martian surface?
- How did X-ray and gravitational-lensing maps separate the location of ordinary matter from dark matter?