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.
From Heaven to Earth
Determining your position on Earth used to be an astronomical problem, and the discovery of Jupiter’s moons made that task much easier.
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.
Lunar Calendar
The calculation of Easter has its roots in astronomy and the cycles of the Moon and seasons.