Discover and read the best of Twitter Threads about #equinox

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For the record, I know nothing about astrology.
I love Astronomy!!!
I was even on the core team during the repair the Hubble Telescope while the Cosmic Origins Spectrograph (COS) which was installed during Servicing Mission 4 (STS-125) in May 2009.
Astronomy (from Greek: ἀστρονομία) is a natural science that studies celestial objects & phenomena. It applies mathematics, physics, & chemistry, in an effort to explain the origin of those objects & phenomena & their evolution. I love looking at the stars.
Objects of interest include planets, moons, stars, galaxies, & comets; the phenomena include supernova explosions, gamma ray bursts, & cosmic microwave background radiation. More generally, all phenomena that originate outside Earth's atmosphere are w/in the purview of astronomy.
Read 49 tweets
T-6 days until @CassiniSaturn burns up in the upper atmosphere of #Saturn. It's has flown for 13 years, and will take pics to #GrandFinale
I'll be highlighting my fav images from @CassiniSaturn over the next week in anticipation of the #GrandFinale on Sept 15. Starting with...
1/ @CassiniSaturn launched aboard a Titan IVB/Centaur in a spectacular night-time launch. Oct 15, 1997. 7 year trip to #Saturn #Grandfinale
Read 171 tweets

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