Indian scientists make deepest radio images of the sun

The sun is the brightest object in the sky, and probably the most studied celestial object. Surprisingly, it still hosts mysteries that scientists have been trying to unravel for decades, for example, the origin of coronal ...

Cassini reveals surprises with Titan's lakes

On its final flyby of Saturn's largest moon in 2017, NASA's Cassini spacecraft gathered radar data revealing that the small liquid lakes in Titan's northern hemisphere are surprisingly deep, perched atop hills and filled ...

Doing up the deep dish

ESA's 35-metre radio antenna in Malarg├╝e, Argentina, has had a major refurbishment. Extenstive modifications made will now allow the ESTRACK network to support future missions like Euclid, launching in 2022, and to transfer ...

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Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing (modulating) some property of the radiated waves, such as amplitude, frequency, or phase. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected and transformed into sound or other signals that carry information.

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