Q 01/05

In what year was the Hubble Space Telescope launched into orbit?

A) 1985

B) 1990

C) 1995

D) 2000

Answer · why

B) 1990

The Hubble Space Telescope was successfully launched aboard the Space Shuttle Discovery on April 24, 1990, as part of the STS-31 mission.

Q 02/05

What initial flaw was discovered in the Hubble Space Telescope's primary mirror shortly after its launch?

A) A significant crack across the surface

B) Incorrect curvature causing spherical aberration

C) Malfunctioning reflective coating

D) Misalignment with the secondary mirror

Answer · why

B) Incorrect curvature causing spherical aberration

Soon after launch, astronomers discovered that the primary mirror had a flaw known as spherical aberration, which caused the images to be blurry. This...

Q 03/05

How many Space Shuttle missions serviced the Hubble Space Telescope?

A) 3

B) 5

C) 7

D) 9

Answer · why

B) 5

Hubble is the only telescope designed to be maintained in space by astronauts. Five Space Shuttle missions repaired, upgraded, and replaced systems on...

Q 04/05

What is the approximate diameter of the Hubble Space Telescope's primary mirror?

A) 1.2 meters

B) 2.4 meters

C) 3.6 meters

D) 4.8 meters

Answer · why

B) 2.4 meters

At the heart of Hubble is a 2.4-meter primary mirror, which collects light from distant celestial objects.

Q 05/05

Which astronomer is the Hubble Space Telescope named after?

A) Carl Sagan

B) Stephen Hawking

C) Edwin Hubble

D) Vera Rubin

Answer · why

C) Edwin Hubble

The Hubble Space Telescope is named after American astronomer Edwin Hubble, who made groundbreaking discoveries about the expanding universe.