Q 01/05

In which part of the spectrum does Webb mainly observe?

A) Ultraviolet

B) Infrared

C) X-ray

D) Radio

Answer · why

B) Infrared

Its range runs from long-wavelength visible red through the mid-infrared, 0.6 to 28.5 micrometres.

Q 02/05

On what date was Webb launched?

A) 4 July 2021

B) 1 January 2022

C) 25 December 2021

D) 31 October 2021

Answer · why

C) 25 December 2021

It lifted off on an Ariane 5 from Kourou, French Guiana, in a launch Space.com called "flawless".

Q 03/05

Which rocket carried Webb into space?

A) Falcon Heavy

B) Atlas V

C) Ariane 5

D) Delta IV Heavy

Answer · why

C) Ariane 5

The European launcher was part of ESA's contribution to the partnership.

Q 04/05

Where does Webb orbit?

A) Low Earth orbit

B) Near the Sun–Earth L2 point

C) Geostationary orbit

D) Around the Moon

Answer · why

B) Near the Sun–Earth L2 point

L2 is about 1.5 million km from Earth; Hubble, by contrast, circles just 550 km up.

Q 05/05

Roughly how far from Earth is the L2 point where Webb sits?

A) 150,000 km

B) 15 million km

C) 1.5 million km

D) 384,000 km

Answer · why

C) 1.5 million km

That is about four times farther out than the Moon.