Astronomy is pseudoscience.

Cosmic rays are electromagnetic radiation.

Ancient astronomers thought the heavens were perfect circles, spheres, and unblemished.

A lunar eclipse that occurs when the Moon moves completely into Earth’s umbral shadow is called

Star A has an apparent visual magnitude of 13.4 and star B has an apparent visual magnitude of 15.4. Star A is ____ than star B.

An eclipse of the Moon (lunar eclipse) as seen from Earth, happens when

If a satellite is in orbit around Earth and the satellite’s altitude is decreased, then the circular velocity __________________.

Which of the following objects cannot transit (i.e., pass in front of) the Sun as seen from Jupiter?

The radiation emitted from a star has a maximum intensity at a wavelength of 500 nm. What is the temperature of this star?

Galileo’s telescopic discoveries of mountains on the Moon and spots on the Sun were controversial because they suggested that the Sun and Moon