CORPUS CHRISTI, Texas — Viewers in Bentonville, Orange Grove, Portland, and even Padre Island were reporting the could see "orange in the sky" and a large plume of what they thought looked like ...

The view shows a rocky hill with filmy, almost fog-like clouds above. These are noctilucent (night-shining ... making them seem to almost glow in the sky,” wrote Alex Innanen, a York University ...

Could a climate megaproject cloud Chile's unparalleled views of universe? But a huge green energy project, part of Chile's plans to become carbon neutral, risks clouding the view, scientists say.

Glittering stars in the night sky aside, scientists have long known that there are diamonds ... they have found evidence that the colossal cloud of dust thought to be thrown up into the atmosphere ...

A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars.

But it will climb so high in the atmosphere that its exhaust will catch sunlight long ... very little moisture up there otherwise. The moisture added by the rocket might form “noctilucent clouds ...

Observing the night sky can be done with no special equipment, although a sky map can be very useful ... born of the same primordial gas cloud. To the unaided eye, only six of the stars are ...