Astronomers describe Mercury as an "inferior planet", because its orbital path around the sun is much closer than that of ...

So really, there's a good sunset every night; we just can't always see it from the ground. You may have noticed this if you've ever taken off in an airplane at sunset.

Aircraft and drones are required to have special sets of lights to make them visible after nightfall. Though not all lights are duplicated in each craft, here is what they include, according to ...

If the sky is full of clouds and overcast, from the ground you won’t see that pretty of a sunset. But if you hopped on a plane, crossing the boundary layer of the atmosphere, you would probably ...

Look low in the west-northwestern sky after sunset on Friday, June 11, ... during World War II, aircraft spotters sometimes mistook the planet for an enemy airplane.

This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between the moon and Mars.

The plane’s engines expel their hot, humid breath, ... On clear days, the resulting contrails are stark and white, accentuating the sky’s watery blue. At sunset, ...

In the post-sunset sky, look west to find the two standing close together, with Mars just to the upper right of Regulus. Both star and planet are the same magnitude (1.4) but their colors will ...

The Moon passes 0.5° south of Spica at 11 A.M. EDT. The pair hangs in the evening sky, located in the south an hour after sunset. By this evening, the Moon has moved some 6.3° southeast of Spica ...