Astronomy
Stratovolcano
[/caption] Stratovolcanoes, or composite volcanoes, are some of the largest, most familiar mountains on Earth. Perhaps you've heard of Mount…
Lava Domes
[/caption] Not all volcanoes are the familiar cone-shaped mountains with lava spewing out of the top. Sometimes you can get…
Don’t ‘Supermassive’ Me: Black Holes Regulate Their Own Mass
Stellar-mass black holes, between 7 and 25 times the Sun’s mass, are called “micro-quasars" when they spawn powerful jets of particles and radiation,…
How Are Volcanoes Formed?
[/caption] Some of the most dramatic mountains in the world are volcanoes. Volcanoes can grow to enormous heights quickly, sometimes…
Calling All Amateur Astronomers: Help Comb Arecibo Data for Gems
[/caption] Einstein@Home is one of the world’s largest public computing projects, with more than 200,000 people donating time on their own computers to…
What Are Volcanoes?
[/caption] Volcanoes are mountains. But unlike most mountains in the world, formed from folding continental plates, uplift and erosion, volcanoes…
Most Active Volcanoes
Most volcanoes are dormant. They erupted millions of years ago, but then the Earth's plate tectonics closed the vent or…
Moonshadows on Saturn’s Rings Are Harbingers of Spring
[/caption] Moonshadows on Saturn's rings are foretelling the planet's equinox, when the sun will be exactly aligned with the planet's equator…
Star Exploded Too Early, May Blow Apart Supernova Theory
[/caption] NASA's Hubble Space Telescope has identified a star a million times brighter than the sun that exploded as a…
SkyWatcher’s Forecast: March 20-26, 2009 – A Messier Marathon Special Edition!
Greetings, fellow SkyWatchers! That's right... It's that time again. Equinox and upcoming New Moon means that many of us are…