STEREO A & B Stories


A New Space Instrument Captures Its First Solar Eruption

4 min read

For new Sun-watching spacecraft, the first solar eruption is always special. On February 12, 2021, a little more than a year from its launch, the European Space Agency and NASA’s Solar Orbiter caught sight of this coronal mass ejection, or…


What Scientists Found After Sifting Through Dust in the Solar System

13 min read

Just as dust gathers in corners and along bookshelves in our homes, dust piles up in space too. But when the dust settles in the solar system, it’s often in rings. Several dust rings circle the Sun. The rings trace…


New Insights on Comet Tails Are Blowing in the Solar Wind

8 min read

Engineers and scientists gathered around a screen in an operations room at the Naval Research Laboratory in Washington, D.C., eager to lay their eyes on the first data from NASA’s STEREO spacecraft. It was January 2007, and the twin STEREO…