Astronomical image of a multicolored nebula in space

Detail of a Hubble Space Telescope mosaic image of the Crab Nebula • NASA, ESA, J. Hester and A. Loll (Arizona State University)

Wonders and portents

It is the morn­ing of July 5, 1054 A.D. You wake to a thin cres­cent moon between the horns of Tau­rus the Bull, low in the east­ern sky. And near­by — won­der of won­ders — a bril­liant new celes­tial object, appar­ent­ly a star, but shin­ing more bright­ly than any star you have ever seen, four times brighter than Venus, so bright that for the next sev­er­al weeks it will be vis­i­ble even in daylight.

Astronomical photograph of hundreds of galaxies in space

A portion of the Ultra Deep Field • NASA/ESA (Public Domain)

Illustration of a spacecraft arriving at Saturn

Artist's conception of the Cassini spacecraft arriving at Saturn • NASA/JPL (Public Domain)

Image of a silhouetted person looking up at the night sky

Photo by Klemen Vrankar on Unsplash

Astronomical image of a orange glowing nebula in space

Rosette Nebula • Canada-France-Hawaii Telescope / 2003

Image of the night sky awash with light pollution

Photo by Hikarinoshita Hikari on Unsplash

Composite image of Saturn's rings seen from different angles

Composite image of Saturn and the angle of its rings relative to Earth from 1996 to 2000 • NASA Hubble (CC BY 2.0)

Astronomical image of a multicolored nebula in space

Detail of a Hubble Space Telescope mosaic image of the Crab Nebula • NASA, ESA, J. Hester and A. Loll (Arizona State University)

Painting of Galileo facing a trio of church officials

“Galileo Facing the Roman Inquisition” by Cristiano Banti (1857)

Detail of the Eagle Nebula as imaged by the Hubble Space Telescope • NASA, ESA, and the Hubble Heritage Team (STScI/AURA)