World’s Most Powerful Telescope Except James Webb


Here are top 7 World’s most powerful telescope(s) launched by NASA except the James Webb Telescope:

Hubble Space Telescope

World's most powerful telescope
Hubble Space Telescope robotic arm during Servicing Mission 4.
Image Credits: NASA

The Hubble Space Telescope(HST) was launched in 1990 and is still operational today. It is the largest space telescope ever built and is capable of taking amazing images of deep space. In addition to its incredible imaging capabilities, HST is also able to take spectra of objects in space. Spectra allow scientists to determine what elements are present in the object being observed.

Kepler Mission

Video credits: NASA

Kepler is a NASA mission to find Earth-size planets orbiting Sun-like stars. Launched in 2009, the spacecraft uses a technique called transit photometry to detect small dips in brightness caused when an exoplanet passes in front of its star. NASA Retires the Kepler Space Telescope on October 30, 2022.

Spitzer Space Telescope

World's most powerful telescope
Image credits: NASA

 Spitzer is a NASA infrared observatory launched in Aug. 25, 2003. It was designed to observe objects in deep space and map the formation of stars and galaxies.

Chandra X-Ray Observatory

World's most powerful telescope
Image credits: NASA

Chandra is a NASA satellite launched in 1999. It detects x-rays emitted by celestial objects, including black holes, neutron stars, and supernova remnants.


 NuSTAR is a NASA satellite launched into orbit in 2012. It focuses high-energy x-ray radiation onto a target area on the ground, revealing details about the composition and structure of celestial bodies.

Swift Gamma Ray Burst Explorer

World's most powerful telescope
Image credits: Wikipedia

Swift is a NASA satellite launched to discover gamma ray bursts (GRBs). GRBs are flashes of intense gamma rays that occur at random intervals throughout the universe.

Conclusion about World’s most powerful telescope

Scientists will continue to relentlessly strive to satisfy our eternal curiosity about the universe. I conclude with the hope that all truths will one day shine before us as clearly as daylight.