New evidence of a Ninth Planet. Astronomer Michael E Brown is more famous as "The man who killed Pluto" thinks their might be nine planets after all. [more inside]
We know space is big, but trying to understand how big is tricky. Say you stare up at the sky and identify stars and constellations in a virtual planetarium, you can't quite fathom how far away all those stars are (previously, twice). Even if you could change your point of view and zoom around in space to really see 100,000 nearby stars (autoplaying ambient music, and there are actually 119,617 stars mapped in 3D space), it's still difficult to get a sense of scale. There's this static image of various items mapped on a log scale from XKCD (previously), and an interactive horizontal journey down from the sun to the heliosphere with OMG Space (previously). You can get a bit more dynamic with this interactive Scale of the Universe webpage (also available in with some variants, if you want the sequel [ previously, twice], the swirly, gravity-optional version that takes some time to load, and the wrong version [previously]), but that's just for the scale of objects, not of space itself. If you want to get spaced out, imagine if If the Moon Were Only 1 Pixel, and travel from there (previously). This past March, BBC Future put out a really big infographic, which also takes a moment to load, but then you can see all sorts of things, from the surface of Earth out to the edge of our solar system.
Is the epically orbiting Pluto, the only planet to be named by a female, about to be reinstated its first class status asks the Independent, eight years after the International Astronomical Union controversially downgraded it to dwarf or minor planet. Since this move, more moons have been discovered and the case for righting this alleged planetary prejudice has continued to be made. While some headlines of today misleading claim that its planetary status has been restored, the public vote has so far been in favor. Scientists have debated, but questions remain over whether returning planetary citizenship to Pluto would also mean having to greencard the larger Eris, Ceres or other bodies in our solar system.
If the Moon Were Only 1 Pixel is a tediously accurate model of the Solar System that Josh Worth made to explain to his daughter just how difficult it is to go on holiday to Mars.
I am a staunch believer in leading with the bad news, so let me get straight to the point. Earth, our anchor and our solitary haven in a hostile universe, is in a precarious situation. The solar system around us is rife with instability.[more inside]
The cosmos is also within us, we're made of star-stuff. We are a way for the cosmos, to know itself.
Cosmos: A Personal Voyage is a thirteen-part television series of one hour shows written by Carl Sagan, Ann Druyan, and Steven Soter, that was aired at the tail end of 1980 and was - at the time - the most widely watched series in the history of American public television. It is best introduced by an audio excerpt of one of his books, The Pale Blue Dot. Inside is a complete annotated collection of the series. [more inside]
What lives where in the Solar System. Fantastic Adventure covers from 1939/40 depicting the kind of lifeforms they think each planet can support. [more inside]
Pluto may have been downsized in 2006, but it's still living large, moon wise: A fourth moon has been discovered orbiting the dwarf planet.
Our solar system may have a ninth planet -- or a tenth, if you're a Pluto sentimentalist. Tyche, which astronomers suspect lurks in the Oort cloud, fifteen thousand times farther away from the sun than the Earth, is thought to be a gas giant four times the size of Jupiter. We may know for sure in April.
At forty miles (64.4 km) from Pluto to Sun, the Maine Solar System Model is the largest complete three-dimensional scale model of the solar system in the world. What, you didn't know there was more than one? And yes, Pluto is staying put.
My very elegant mother just sat upon ninjas... the textbooks, mnemonic devices and more will have to be changed today. Pluto has been demoted from its status as planet to a dwarf planet. We now have 8 in our solar system. The debate is not at all new, and its apparent resolution may not matter to our everyday lives, but it's just a little weird to think of all of the things that will have to be retroactively edited or amended as a result.
The New Horizons spacecraft will be the first man-made object to visit our controversial sibling planet. An Atlas V will be used to launch the craft to the fastest speed that man has ever hurled an object to the heavens. Due to this and the small size of Pluto, the probe will only be capable of one flyby. Today is the first day in the launch window that the rocket is hoped to be launched.