NASA to make big announcement about its mission to the sun on Wednesday

NASA is expected to release details about its newest mission on Wednesday.

The space agency is planning to send a spacecraft to the sun.

The mission, called Solar Probe Plus, will launch in the summer of 2018. It marks NASA's first mission to fly within four million feet of the sun's surface.

The goal is to collect data to improve forecasting of space weather events that impact astronauts and us here on Earth.

NASA hopes to answer decades-old questions about the science behind how stars work.

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