The arrival of a visitor from beyond our solar system is a cosmic event of staggering rarity, yet it has just happened for only the third time in human history. Imagine a silent, billion-year journey ...

New images taken with the Gemini North telescope in Hawaii confirm that the interstellar comet 3I/ATLAS has gotten brighter ...

A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

Researchers using NASA's James Webb Space Telescope have detected the strongest evidence yet for an atmosphere on a rocky ...

Here's how an atmospheric river, particularly the powerful Pineapple Express, works and why it can carry so much ...

A brilliant point of light is rising in the eastern sky soon after dark this month, drawing comparisons to the "Star of ...

Atmospheric pressure, specifically the altimeter setting, is the most critical yet underappreciated weather element for pilots to accurately determine altitude, especially in mountainous regions and ...

After a winter storm pummeled California with rain, most of its reservoirs are recording above-average levels for this point in the season. California’s second-largest reservoir, Lake Oroville, is 52% ...

The inside of giant planets can reach pressures more than one million times the Earth's atmosphere. As a result of that intense pressure, materials can adopt unexpected structures and properties.

Atmospheric rivers are relatively long, narrow regions in the atmosphere – like rivers in the sky – that transport most of the water vapor outside of the tropics. While atmospheric rivers can vary ...

A powerful atmospheric river storm has killed at least six people in California. Evacuation orders are in effect for areas recently affected by wildfires due to increased flood and mudslide risks. An ...