What technique uses computer-controlled mirrors to correct for atmospheric distortion?

What type of wave is visible light?

What device is used to determine a star's spectrum?

What is the magnifying lens that enlarges the image produced by a telescope?

What are the dark, narrow lines where the colors are absorbed in a broad spectrum of color?

The resolution of radio telescope images can be increased by combining images from multiple telescopes through ______________.

A telescope that uses a mirror as the objective is a _______________ telescope.

The change in a star's spectrum caused by its motion away from Earth is called ______________.

The color sequence seen when white light shines through a prism is called the _________________ spectrum.

The reflecting telescope launched into space in 1990 is the ______________________.