Small Bodies of the Solar System | Simple Site

Astrophysics Division

Comets

Goddard Space Flight Center

Hubble Space Telescope

Planetary Science

Small Bodies of the Solar System

The Solar System

NASA’s Hubble Detects First-Ever Spin Reversal of Tiny Comet

Astronomers using NASA’s Hubble Space Telescope have found evidence that the spinning of a small comet slowed and then reversed its direction of rotation, offering a dramatic example of how volatile activity can affect the spin and physical evolution of small bodies in the solar system. This is the first time researchers have observed evidence […]

Posted March 26, 2026

Astrophysics Division

Comets

Goddard Space Flight Center

Hubble Space Telescope

Small Bodies of the Solar System

The Solar System

NASA’s Hubble Unexpectedly Catches Comet Breaking Up

In a happy twist of fate, NASA’s Hubble Space Telescope just witnessed a comet in the act of breaking apart. The chance of that happening while Hubble watched is extraordinarily minuscule. The findings published Wednesday in the journal Icarus. The comet K1, whose full name is C/2025 K1 (ATLAS)—not to be confused with interstellar comet […]

Posted March 18, 2026

Vesta

Dawn

GRAIL (Gravity Recovery And Interior Laboratory)

Jet Propulsion Laboratory

Planetary Science

Small Bodies of the Solar System

The Solar System

NASA Studies Reveal Hidden Secrets About Interiors of Moon, Vesta

Analyzing gravity data collected by spacecraft orbiting other worlds reveals groundbreaking insights about planetary structures without having to land on the surface. Although the Moon and the asteroid Vesta are very different, two NASA studies use the same technique to reveal new details about the interiors of both.

Posted May 14, 2025

Europa

General

Jet Propulsion Laboratory

Small Bodies of the Solar System

The Solar System

How NASA Is Protecting Europa Clipper From Space Radiation

To explore the mysterious ice-encrusted moon Europa, the mission will need to endure bombardment by radiation and high-energy particles surrounding Jupiter.

Posted October 24, 2023

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