NASA @NASA
There’s a SWAN in space. 🦢 Discovered by an instrument on the @ESA & @NASASun Solar and Heliospheric Observatory mission, comet SWAN makes its closest approach to Earth today at a distance of 53 million miles. Its closest approach to the Sun is May 27: https://t.co/EBnEq0bYwk https://t.co/a8qtcdP1zf — PolitiTweet.org