Molten alien planet with sulfur-choked atmosphere displays unique hellscape
- 17-Mar-2026
Astronomers have spotted a planet orbiting a star in our neighborhood of the Milky Way galaxy that presents a unique hellscape – covered with a perpetual ocean of magma and enveloped by a noxious and fiercely hot sulfur-rich atmosphere. The molten planet’s diameter is more than 60% greater than Earth, though its density is only […]
Astronomers detect ferocious jet-stream winds on alien planet
- 22-Jan-2025
In Earth’s upper atmosphere, a fast-moving band of air called the jet stream blows with winds of more than 275 miles (442 km) per hour, but they are not the strongest in our solar system. The comparable high-altitude winds on Neptune reach about 1,200 miles (2,000 km) per hour. Those, however, are a mere breeze […]
Scientists detect rotten egg chemical on Jupiter-like alien planet
- 09-Jul-2024
The planet known as HD 189733b, discovered in 2005, already had a reputation as a rather extreme place, a scorching hot gas giant a bit larger than Jupiter that is a striking cobalt blue color and has molten glass rain that blows sideways in its fierce atmospheric winds. So how can you top that? Add […]