A fast-moving star is colliding with interstellar gas, creating a spectacular bow shock - Phys.org

Zeta Ophiuchi has had an interesting life. It began as a typical large star about twenty times more massive than the sun. It spent its days happily orbiting a large companion star until its companion exploded as a supernova about a million years ago. The expl…

Zeta Ophiuchi has had an interesting life. It began as a typical large star about twenty times more massive than the sun. It spent its days happily orbiting a large companion star until its companion… [+3067 chars]

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