Category Archives: Science

Evidence Of A ‘Ninth Planet’

American astronomers say they have strong evidence that there is a ninth planet in our Solar System orbiting far beyond even the dwarf world Pluto.

The team, from the California Institute of Technology (Caltech), has no direct observations to confirm its presence just yet.Rather, the scientists make the claim based on the way other far-flung objects are seen to move.But if proven, the putative planet would have 10 times the mass of Earth.

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How The Milky Way Grew

“The Milky Way grew up by growing out,” Melissa Ness, an astronomer at the Max Planck Institute for Astronomy in Heidelberg, Germany, said at a news conference.

Ness and her colleagues developed a computer program that analysed the light emitted by red giants —bright stars that started out like the sun but exhausted their hydrogen fuel — to determine the stars’ masses and ages. Although scientists were pretty sure that galaxies grow outward, this new census of the galactic interior to the outskirts will help researchers chart that development in impressive detail.

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Li-Fi Real World Tests Show Speeds 100 Times Faster Than Wi-Fi

Li-Fi is on its way to the public, as researchers have finally tested it in the real world, and it offers some pretty impressive results.

The technology transmits data using a technique called visible light communication, or VLC, and using the tech, scientists were able to transmit data at a pretty hefty 224 GB per second. Outside of the lab, scientists reported speeds of 1 GB per second, which is a lot less than in the lab, but still represents speeds that are 100 times speedier than the average Wi-Fi delivery.

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Light-based memory chip to store data permanently

The world’s first entirely light-based memory chip to store data permanently has been developed by material scientists. The device, which makes use of materials used in CDs and DVDs, could help dramatically improve the speed of modern computing. Continue reading Light-based memory chip to store data permanently

Combined Rectifier and Antenna – Converts Light to DC Current

Using nanometer-scale components, researchers have demonstrated the first optical rectenna, a device that combines the functions of an antenna and a rectifier diode to convert light directly into DC current.

“A rectenna is basically an antenna coupled to a diode, but when you move into the optical spectrum, that usually means a nanoscale antenna coupled to a metal-insulator-metal diode”

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Earth-like planets around small stars likely have protective magnetic fields, aiding chance for life

A planet’s magnetic field emanates from its core and is thought to

Credit: NASA/Johns Hopkins University Applied Physics
Credit: NASA/Johns Hopkins University Applied Physics

deflect the charged particles of the stellar wind, protecting the atmosphere from being lost to space. Magnetic fields, born from the

cooling of a planet’s interior, could also protect life on the surface from harmful radiation, as Earth’s magnetic field protects us. Continue reading Earth-like planets around small stars likely have protective magnetic fields, aiding chance for life