Neptune, the farthest planet from the Sun, has long been a subject of fascination for astronomers, especially due to its ...

Neptune is big, it’s blue, and it is a planet that can tear you apart if you happen to drop into one of its massive, ...

“I was astonished — Neptune’s upper atmosphere has cooled by several hundreds of degrees,” Melin said. “In fact, the temperature in 2023 was just over half of that in 1989.” ...

In 2018, a dark spot appeared in Neptune’s atmosphere, giving astronomers a terrific opportunity to finally figure out what these sorts of shadowy apparitions are.

30 years ago in 1989, @NASAVoyager 2 made a close flyby of Neptune, giving humanity its first close-up of our solar system's eighth planet. Wrapped in teal- and cobalt-colored bands of clouds, the ...

Researchers observed exoplanet GJ 1214b's atmosphere by measuring the heat it emits while orbiting its host star. Astronomers directly detected the light emitted by a sub-Neptune exoplanet -- a ...

A newly discovered distant mini-Neptune planet may possess its own atmosphere, ocean, or a combination of the two, even if they don't last for long. The extrasolar planet, or exoplanet, designated ...

Over the past few years, the white clouds that usually shroud Neptune’s surface have disappeared, and it may be because of changes in the sun’s activity over its 11-year cycle ...

This map showed a big change in temperature between the mini-Neptune’s day and night sides — only possible if its atmosphere is made of heavier molecules, such as water or methane. pic.twitter ...

It’s a pretty extreme system.” Hot Neptune LTT 9779b was discovered just last year, becoming one of the first Neptune-sized planets discovered by NASA’s all-sky TESS planet-hunting mission.

The telescope also saw signs that the planet's atmosphere is not hydrogen-rich, suggesting it's not just a scaled-down Neptune, and there was evidence of water vapor and methane.