At first glance, Mars looks completely different from Earth. It’s got that dusty red surface, eerie atmosphere, and ...

Venus reaches its highest altitude above the eastern horizon in 2025 on Aug. 1. Venus will reach its highest altitude in the ...

On Sunday, August 3, the moon will slide just beneath Antares, the brightest star in the constellation Scorpius and a red supergiant star.

Harkening back to science class, shorter wavelengths register blue and violet. Longer wavelengths are red, yellow, and orange. That’s why we tend to see more red, yellow, and orange sunsets. Other ...