Hubble Deep Field Trivia Questions

The galaxies in the Deep Field are extremely distant, billions of light-years away, not from our local cosmic neighborhood.

The galaxies in the Deep Field span a range of ages, including very young galaxies from the early universe, some younger than the Milky Way.

Hubble observed the same tiny patch for 10 consecutive days in December 1995, accumulating a total exposure of about 100 hours.

The image focused on a tiny patch of sky, about 1/100th the size of a full moon, roughly the apparent size of a sand grain viewed from arm's length.

It was aimed at a seemingly empty area, but it was carefully chosen to be free of bright stars and galactic dust—not entirely random.

The most distant galaxies in the Deep Field are about 12 billion light-years away, but the universe is 13.8 billion years old, so some light traveled nearly that long—though not quite 13 billion.

Faintness can result from distance or low luminosity, but in the Deep Field, many faint galaxies are extremely distant, though some nearer dwarf galaxies also appear faint.

Hubble orbits Earth every 97 minutes, and during the Deep Field exposures, it avoided the bright Earth and Sun to prevent stray light from ruining the long exposures.