A planet is in conjunction when it has same right ascension as the Sun as seen from Earth.
The Illusion of Reality
Often in astronomy the images presented are not the images we would actually see. But this manipulation of images actually serves a scientific purpose.
A Whole New World
The Hubble telescope is 25 years old, and in that time it has revolutionized our understanding of the cosmos.
A Deeper Sky
The James Webb space telescope has a mission to see deeper into the sky than ever before.
A Bunch of Yahoos
Using images of comet Holmes gathered from a Yahoo! image search, astronomers have calculated the comet’s orbit.
Blinded by the Light
Why do astronomers use red flashlights? It all has to do with dark adaption, and a bit of chemistry in our eyes.
What’s Your Sign?
The Zodiac constellations began as a tool for astrologers. They are now astronomical constellations.
Writing on the Wall
When did humans first become astronomers? We can’t be sure, but there are indications that we’ve been astronomers for at least 17,000 years.
Teapot Star
A new star known as a nova has appeared in the constellation Sagittarius (aka the teapot). It’s one of the few novas that is visible with the naked eye.