7 Earth Sized Planets Found Orbiting a Dwarf Star

Not just one, but seven Earth-size planets that could potentially harbor life have been identified orbiting a tiny star not too far away, offering the first realistic opportunity to search for biological signs of alien life outside of the solar system.

The planets orbit a dwarf star named Trappist-1, about 40 light years, or about 235 trillion miles, from Earth. That is quite close, and by happy accident, the orientation of the orbits of the seven planets allows them to be studied in great detail.

One or more of the exoplanets — planets around stars other than the sun — in this new system could be at the right temperature to be awash in oceans of water, astronomers said, based on the distance of the planets from the dwarf star.

https://www.nytimes.com/2017/02/22/science/trappist-1-exoplanets-nasa.html?emc=edit_na_20170222&nl=breaking-news&nlid=50276771&ref=cta

Riding Light

In our terrestrial view of things, the speed of light seems incredibly fast. But as soon as you view it against the vast distances of the universe, it’s unfortunately very slow. This animation illustrates, in realtime, the journey of a photon of light emitted from the surface of the sun and traveling across a portion of the solar system, from a human perspective.

Riding Light from Alphonse Swinehart on Vimeo.

The Largest scale model of the solar system is in Sweden – spans 950km across the country

million and stretches the entire length of the country. The Sun is represented by the Globe arena in Stockholm, the largest spherical building in the world. The planets are placed and sized according to scale with the inner planets being in Stockholm and Jupiter at the International airport Arlanda. The outer planets follow in the same direction with Saturn in Uppsala and Pluto in Delsbo, 300 km from the Globe. The model ends at the Termination shock, 950 km from the Sun.

At each planet station, exhibits provide information about astronomy and the natural sciences, and also about related mythology and culture. The Stockholm Visitor’s Board (former Stockholm Information Service) was a sponsor of the project in the beginning, like several museums, theaters, parks and scientific institutions.

scale-of-solar-system

 

the globe in stockholm

The world’s largest spherical building is 110 m in diameter, the Globe in Stockholm (aka Ericsson Globe) represents the Sun in Sweden Solar System.

 

 

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Unite general relativity and quantum mechanics with wormholes

This new equation might finally unite the two biggest theories in physics, claims physicist
Linking general relativity and quantum mechanics with wormholes.

wormhole-grav_1024

One of the most stubborn problems in physics today is the fact that our two best theories to explain the Universe – general relativity and quantum mechanics – function perfectly well on their own, but as soon as you try to combine them, the maths just doesn’t work out.
But a Stanford theoretical physicist has just come up with a new equation that suggests the key to finally connecting the two could be found in bizarre spacetime tunnels called wormholes. 

http://www.sciencealert.com/this-new-equation-might-finally-unite-the-two-biggest-theories-in-physics-says-physicist


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