They are usually found at altitudes above 20,000 feet and ... or when the sun is lower in the sky, casting longer shadows. During sunrise or sunset, clouds can take on vibrant hues of red, orange ...

In January 2023, NASA's Curiosity rover captured images of noctilucent clouds ... during sunset and shimmering in hues of red ...

Winds will taper going into Thursday evening, with some clouds around. Seasonably cool conditions moving into the upcoming weekend ...

People across Wales looked to sky on Thursday and saw the usually grey clouds lit up with a pink ... "When it came to Thursday's sunset we had different levels of cloud in the atmosphere which ...