The sun is still shining but, the sky is extremely dark to the west. Pitch black, as many would call it. I remember growing up seeing this type of sky, an ominous sign that a bad storm was brewing ...

Night-shining clouds, or noctilucent clouds, an ethereal type of cloud known to ripple across the edge of space, were expected to be rare this year, but a new study finds these specters are ...

Striking displays of clouds which are mostly only seen in the summer months have been appearing in the skies over Northern ...

These unique night-shining clouds captivate skywatchers during the summer ... The sun needs to be at least 6° below the horizon before the sky is sufficiently dark for NLCs to become visible.

Noctilucent clouds (NLCs), or night-shining clouds, are a type of mesospheric cloud. As the name suggests, mesospheric clouds form in the mesosphere, the third layer of Earth's atmosphere, which ...

Brown University environmental anthropologist Myles Lennon examines the complexity of sustainable energy infrastructure and explores solar solutions for working-class communities.

That's because they were forming from the exhaust of the rocket more than 200,000 feet in the air, so while the sun had not risen for us, it was able to reflect off those clouds. Hence the term ...

These clouds can only be seen after sunset or before sunrise. This is because the sun is below the horizon. This allows the clouds, which are dim, to not be hidden from the brightness of the sun.

About 45 minutes before the peak of Philly’s 90% eclipse, the sun was shining through light clouds and haze. About 45 minutes afterward the sun was out again. But for most of the time that the moon ...

Noctilucent clouds are collections of ice crystals that form blue or silver clouds just after sunset, and before it gets fully dark. They take shape really high in the sky, higher than any other ...

Rare and mysterious clouds that are so bright they can be seen at night have mystified people since they were first observed more than a century ago, but scientists have now discovered a key ...

Photographers hoping to capture stunning "night-shining" clouds have been left frustrated this year. The fast-approaching solar maximum may be to blame.