NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.

Comet 3I/ATLAS is not just another icy visitor cutting across the night sky. As it hurtles through the inner solar system, ...

New infrared observations reveal that the rare interstellar visitor known as comet 3I/ATLAS has dramatically brightened ...

A NASA mission is underway to map the heliosphere, which is a huge protective bubble around the solar system that was created by the sun.

Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets of worlds we may never see directly.

This Feb. 4, 2026, image from NASA's Solar Dynamics Observatory (SDO) captures a strong solar flare erupting from the star.

The Artemis II mission will bring in experts from across the country, and that includes scientists in Boulder at the center ...

Northern lights occur when a solar flare interacts with Earth's atmosphere.

NASA’s IMAP spacecraft studies charged particles, energetic neutral atoms, and magnetic fields at the heliosphere’s boundaries, providing real-time space weather data for Earth and spacecraft.

The Sun released a strong solar flare on Tuesday, Feb. 3, following several eruptions in the preceding days, prompting ...

A sun-sized space detector called LISA is set to catch ripples from colliding black holes, giving scientists a brand-new way to explore the universe.

CAPE CANAVERAL, Fla. -- Sixty years after NASA set the goal, and three years after its Parker Solar Probe launched, the spacecraft has become the first to "touch the sun." The Parker Solar Probe has ...