The Hubble Space Telescope Trivia Questions

Earth's ozone layer blocks most ultraviolet light from reaching the ground. Hubble's position above the atmosphere allows it to capture UV data crucial for studying hot stars and galaxies.

Hubble has no film; it uses digital CCD sensors similar to those in modern smartphones. Data is transmitted electronically to Earth, where it is processed into the colorful images we see.

After launch in 1990, Hubble's main mirror was found to be too flat by 2.2 microns, causing spherical aberration. A 1993 servicing mission installed corrective optics, restoring clarity.

The iconic Hubble Ultra Deep Field combined over 800 exposures totaling 11.3 days of observation to reveal galaxies 13 billion light-years away, among the faintest ever seen.

Hubble has directly imaged exoplanets, but only those within our own Milky Way galaxy, typically a few hundred light-years away. Planets in other galaxies are far too distant to resolve.

In 1998, Hubble observations of distant supernovae revealed the universe's expansion is accelerating, driven by dark energy, a discovery that won the Nobel Prize in Physics.

Hubble orbits at about 340 miles altitude, well within Earth's magnetosphere. The magnetic field extends tens of thousands of miles into space, protecting it from solar wind.

Even with its resolution, Hubble can't resolve objects smaller than about 60 meters on the Moon, so flags or landers appear as tiny blurs, not discernible shapes.