Magazine | Page 81 of 281 | Astronomy.com

Seasonal changes in color or contrast on mars were once thought to indicate the presence of vegetation or water. Are there still seasonal changes, and if so, why?

Science, Solar System

If our solar system is composed of the remains of stars that used up their hydrogen and went supernova, where did our sun get the hydrogen it began with?

A morning planet trio

Constrained hallucinations

A successful eclipse adventure

How do clouds form on Jupiter or other gas giants, and how deep do they extend?

Earth’s ‘shadow bands’

Science, Solar System

How is the temperature of the Sun’s surface measured through its much hotter atmosphere, the corona?

5 Questions with David J. Eicher: Episode 15 – David Helfand

Science, Solar System

I saw a program that showed the Moon revolving around Earth, causing the oceans to swell on both sides of the planet. Shouldn’t the ocean opposite the Moon be shallower than the side facing it?

How do we know what stars are behind dark nebulae (if they absorb the light from background stars)?

How far can a pair of stars be separated and still maintain a stable orbit around each other?