1.07 Space Telescopes

What is used inside a reflecting telescope to capture and direct the light?

If something were to happen to the Sun, how soon would we know?

Proxima Centauri, the closest star to the Earth (besides the Sun) is 4 lightyears away.

How long does it take the light from Proxima Centauri to reach Earth?

What causes the distortion of light that reaches ground-based telescopes and observatories?

What did scientists discover in "empty" area of the Hubble Deep Field?

Why hasn't the Hubble Telescope been serviced since 2009?

As an optical telescope, which part of the electromagnetic spectrum does Hubble observe?

Which part of the electromagnetic spectrum does James Webb observe?

What phenomenon occurs when light waves from distant galaxies are lengthened?

Why is the James Webb Space Telescope positioned far from Earth?

What is the purpose of the sunshield on the James Webb Space Telescope?

Which telescope has a bigger mirror?

Why is gold used on the mirrors of the telescope?

What was a significant difference between the James Webb Space Telescope and the Hubble Space Telescope?

Reflection: Answer as many as you like (at least 1).

• What is something new you learned?

• What is something that suprised you?

• What questions do you have?

• What would you like to learn more about?