I find it useful. http://www.fourmilab.ch/cgi-bin/Yourtel

Just watched Nova from this week ( I tivo'ed it). It was great But I have a hard time explaining to my wife about the speed of light. She think everything we...

Inside planets and stars masses http://pages.videotron.com/ceber/inside_planets_and_stars_masses.pdf Inside the...

The rotation of the Earth generates the daylight darkness cycle,this rotating Earth is round therefore it has different latitudinal speeds which cause twilight...

In order to understand the mindset of a mass denial in respect to what is essentially basic intelligence transmitted through acknowledgement of planetary facts...

http://www.space.com/scienceastronomy/wisconsin-meteor-fireball-fragment-100417.html Also hundreds of nice personal reports at Amer Meteor Society ...

NASA's Great Moonbuggy Race An annual competition challenges students to design and build vehicles that address the same problems faced by the scientists who...

NASA Science News for April 16, 2010 Hubble images of Pluto have researchers scratching their heads and wondering, what's happening on the dwarf planet?...

AURORA WATCH: High-latitude sky watchers should be alert for auroras on April 17th when a coronal mass ejection (CME) is expected to deliver a glancing blow...

Backward planets may have flipped into place Reversed orbits among ‘hot Jupiters’ decreases chance of Earthlike...

Stormy weather on Saturn Astronomers have for the first time glimpsed lightning storms on...

Famous Martian meteorite younger than thought The famous fragment of Mars, once proposed to hold signs of extraterrestrial life, is still pretty old. But the...

There was a meteor--but much further away than you can imagine,...

Version 8.5 of RTGUI, the free Real-Time Astronomy Program for Windows, has just been released. The main enhancememnts since the previous release last year...

IMAGE GALLERY: Herschel space observatory peers into stellar nursery Protostars shine in their dusty shrouds in this image of the molecular cloud associated...

Calm Sun Is Bringing a Chill to England Scientists tie cold winters to decreased solar activity ...

OBSERVATIONS: More evidence suggests Venus has recent volcanic activity Venus's crater impact history indicates that it had been resurfaced by volcanic...

Finding and observing structure in M81, M82 and M51 in a 66mm F6 ED refractor on a lightweight altazimuth tripod mount with no finder, just a 12.5mm eyepiece...

On Apr 13, 6:29*pm, kelleher.mumbled his way through yet another huge dollop of his own personal monologue of total codswallop. Attention seeking raised to...

On Sat, 3 Apr 2010 11:13:56 -0700 (PDT), Chris Krolczyk wrote: On Apr 3, 1:06?am, The Chief Instigator wrote: On...