Constellations & Stars
Constellations and Asterisms
A meaningful pattern of stars visible with the unaided eye, or a region of space seen from Earth that is bounded by borders designated by the International Astronomical Union. Americans know northern hemisphere constellations by the names given them by ancient Babylonians and Greeks. From StarDate.
The Constellations and their Stars
An interactive site with lots of Java applets to illustrate the night sky. The site covers something as simple as moon phases to pin pointing Messier objects. For astronomers of all ages.
Imagine the Universe Science
Explore a universe of black holes, dark matter, and quasars… A universe full of extremely high energies, high densities, high pressures, and extremely intense magnetic fields which allow us to test our understanding of the laws of physics.
The Life Cycles of Stars
New stars come in a variety of sizes and colors. They range from blue to red, from less than half the size of our Sun to over 20 times the Sun’s size. It all depends on how much gas and dust is collected during the star’s formation.
The Life and Death of Stars
Astronomers believe that molecular clouds, dense clouds of gas located primarily in the spiral arms of galaxies are the birthplace of stars.
Make Your Own Star Clock
Print this page from browser and cut out the circles. Then when you are out star gazing, you’ll also know what time it is. ‘Course, you could just wear a watch.
7 Amazing Exoplanets [Interactive]
Hundreds of planets around other stars have been discovered recently, but many centuries may pass before human eyes actually see them up close. Interpreting current data, Hugo award-winning artist Ron Miller takes us to seven of the most fascinating of these worlds.
Join the interactive quest for another Earth-like planet. From JPL.
To help find your way around the night sky, Skymaps.com makes available for free* each month The Evening Sky Map — a 2-page monthly guide to the night skies of the world — northern and southern hemispheres, and the equatorial regions.
Stars: World Book at NASA
A star is a huge, shining ball in space that produces a tremendous amount of light and other forms of energy. The sun is a star, and it supplies Earth with light and heat energy. The stars look like twinkling points of light — except for the sun. The sun looks like a ball because it is much closer to Earth than any other star.
Stars: Birth, Life & Death
Stars are formed in giant clouds of dust and gas, and progress through their normal life as balls of gas heated by thermonuclear reactions in their cores. Depending on their mass, they reach the end of their evolution as a white dwarf, neutron star or black hole.