Image: Aerial antenna for Venus mission test

How can you accurately test a space antenna down here on Earth when it has been scaled up to penetrate the subterranean depths of another planet? This was the question faced by SENER in Spain, currently designing a candidate ...

Creating a non-radiating source of electromagnetism

An international team of researchers has developed a way to create non-radiating sources of electromagnetism. In their paper published in the journal Physical Review Letters, the group describes their technique and how well ...

'Bat-sense' tech generates images from sound

By cleverly analyzing the results, the algorithm can deduce the shape, size and layout of a room, as well as pick out in the presence of objects or people. The results are displayed as a video feed which turns the echo data ...

Video: Drone test of Hera mission's asteroid radar

This drone hauled a model of the Juventas CubeSat high into the air, as a practical test of the antennas designed to perform the first radar sounding of the interior of an asteroid.

The Very Large Array: Astronomical shapeshifter

When the Very Large Array was completed forty years ago, it was a different kind of radio telescope. Rather than having a single antenna dish, the VLA has 27. The data these antennas gather is combined in such a way that ...

NASA contacts Voyager 2 using upgraded Deep Space Network dish

On Oct. 29, mission operators sent a series of commands to NASA's Voyager 2 spacecraft for the first time since mid-March. The spacecraft has been flying solo while the 70-meter-wide (230-foot-wide) radio antenna used to ...

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