Johannes Kepler and the Case of the Disappearing Sunspots
Today’s paper uses Johannes Kepler’s pre-telescope sunspot drawings to re-examine irregular 17th century solar activity.
200 Millionth Anniversary Gift: A Necklace Made of Stars
200 million years after two galaxies began to merge and created one of the most powerful AGN outbursts ever observed, they left behind an arc of star formation resembling beads on a string.
Are Spiral Galaxies Older than We Thought?
Today’s paper uses JWST to show that there are more spiral galaxies in the early universe than we previously expected.
Dyson Spheres in the Milky Way?
Maybe! Today’s paper presents seven Dyson sphere candidates, theoretical technosignatures of advanced extraterrestrial life.
How Ancient Chinese Solar Eclipse Records Helped to Determine the Earth’s Rotation Rate
Post-eclipse blues? Today’s paper uses solar eclipse observations made thousands of years ago to track how Earth’s rotation rate has slowed over time.
