Comets

To watch a comet form, a spacecraft could tag along for a journey toward the sun color photograph of comet with long tail with stars in background

To watch a comet form, a spacecraft could tag along for a journey toward the sun

‘Centaurs’ near Jupiter could provide unique opportunity to learn about solar system, says UChicago scientist

Mysterious interstellar visitor was probably a ‘dark hydrogen iceberg,’ not aliens Oumuamua

Mysterious interstellar visitor was probably a ‘dark hydrogen iceberg,’ not aliens

Study by UChicago, Yale scientists lays out origin story for object named ‘Oumuamua

Fred Ciesla

Fred Ciesla

Title: Professor in Geophysical Sciences

Expertise: Asteroids and meteorites, Astronomy and Astrophysics, Comets, Planetary science, Theoretical modeling

Personal website: http://geosci.uchicago.edu/~fciesla/index.html