A massive comet traveling through the solar system is much larger than previously thought and could be a remnant of alien ...

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure ...

A NASA mission, IMAP, and two more spacecraft that will study space weather are traveling through space atop a single SpaceX ...

The spacecraft will map the boundaries of the heliosphere, study how Earth’s outer atmosphere reacts to solar activity and ...

A NASA mission to study the heliosphere—the sun's magnetic bubble that shields our solar system—and develop a better ...

Asteroid ‘Families’ Reveal Hidden Histories and Impact Risks across the Solar System ...

IMAP (short for "Interstellar Mapping and Acceleration Probe") is the primary payload on today's flight. The roughly $600 ...

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

Northern lights, or auroras, are not exclusive to Earth. Astronomers have already detected this phenomenon on most planets ...

Most of that brightness increase has been in the green part of the visible light spectrum, suggesting a “surge of gas production as the comet nears the Sun,” according to SpaceWeather. “The key ...

This invisible boundary is known as the heliosphere. It's the endpoint beyond which our Sun does not have any reach or power.

Astronomers have discovered 2017 OF21, a distant dwarf planet candidate located about 90 times farther from the Sun than ...