Astronomy
- Gigantic Bubbles Boiling On The Surface Of Star Betelgeuse
Giant star Betelgeuse shed the equivalent mass of the Earth every year but how do it does is not properly understood. Using state of the art imaging techniques, astronomers have revealed a vast plume of gas and gigantic bubbles boiling on the surface...
- Titan May Have Subsurface Ocean Of Hydrocarbons
Saturn's largest moon, Titan, may have a subterranean ocean of hydrocarbons and some topsy-turvy topography in which the summits of its mountains lie lower than its average surface elevation, according to new research. Titan is also more squashed...
- New Candidate For Coldest Known Star May Help Blur The Distinction Between A Star And A Planet
An artist?s impression of the CFBDSIR 1458+10 star system. The star in the background is the candidate for the coldest known star. Image: ESO/L. CalçadaThere may be a new candidate for the coldest known star, an object classified as a brown dwarf with...
- Majestic Panorama Of The Milky Way Galaxy
Physicist Axel Mellinger, a professor at Central Michigan University, has created a giant, high resolution, panorama of the Milky Way galaxy. It's resolution clearly shows stars that are up to a 1000 times fainter than the limit of the human eye,...
- Astronomy:seeing Outer Space
While it was just a TV show, that little speech at the beginning of the original Star Trek show really did do a good job of capturing our feelings about space. It is those feelings that drive our love of astronomy and our desire to learn more and...
Astronomy
Quote: John Wheeler
"Mass tells space-time how to curve, and space-time tells mass how to move."John Wheeler is commenting on a result of Einstein's general theory of relativity, stating how space-time can bend. Gravitational force can be explained by the warp that a massive object causes on the space around it. Other objects coming near this massive object are forced to follow a course dictated by the warp, their paths being distorted. This is often compared to placing a large ball, like a bowling ball, on a stretched rubber surface. The ball causes a deformation in the surface, and if a smaller ball, like a marble, is dropped onto the surface, it will follow a path dictated by the warped surface.
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| A two dimensional projection of a three dimensional analogy of space-time curved around Earth. Image: Johnstone, via Wikipedia |
- Gigantic Bubbles Boiling On The Surface Of Star Betelgeuse
Giant star Betelgeuse shed the equivalent mass of the Earth every year but how do it does is not properly understood. Using state of the art imaging techniques, astronomers have revealed a vast plume of gas and gigantic bubbles boiling on the surface...
- Titan May Have Subsurface Ocean Of Hydrocarbons
Saturn's largest moon, Titan, may have a subterranean ocean of hydrocarbons and some topsy-turvy topography in which the summits of its mountains lie lower than its average surface elevation, according to new research. Titan is also more squashed...
- New Candidate For Coldest Known Star May Help Blur The Distinction Between A Star And A Planet
An artist?s impression of the CFBDSIR 1458+10 star system. The star in the background is the candidate for the coldest known star. Image: ESO/L. CalçadaThere may be a new candidate for the coldest known star, an object classified as a brown dwarf with...
- Majestic Panorama Of The Milky Way Galaxy
Physicist Axel Mellinger, a professor at Central Michigan University, has created a giant, high resolution, panorama of the Milky Way galaxy. It's resolution clearly shows stars that are up to a 1000 times fainter than the limit of the human eye,...
- Astronomy:seeing Outer Space
While it was just a TV show, that little speech at the beginning of the original Star Trek show really did do a good job of capturing our feelings about space. It is those feelings that drive our love of astronomy and our desire to learn more and...