Advanced Composition Explorer

The Advanced Composition Explorer (ACE) is a spacecraft that was launched into space in 1997. It helps scientists to observe and measure particles coming from the sun and other sources outside of Earth. It works by collecting information from particles like protons, electrons, and atoms that are traveling through space. Scientists use this information to better understand how the solar system, and even other galaxies, work. With ACE, scientists can also study how space radiation affects our environment here on Earth. So, ACE helps us learn more about things far away - like stars, black holes and other galaxies.