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Picture of the Week

LUX dark matter detector

Detecting dark matter

The kind of matter and energy we can see and touch – whether it is in the form of atoms and molecules, or heat and light, only forms a tiny proportion of the content of the Universe, only about 5%. Over a quarter is dark matter, which is totally invisible but whose gravitational attraction can be detected; while over two thirds is dark energy, a force that pushes the Universe to expand ever faster.
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How to build a satellite

19 August 2013

Dhiren Kataria (MSSL) holds a CubeSat chassis in front of a vacuum chamber

UCL’s Mullard Space Science Laboratory is one of the key facilities in the UK’s space programme. Involved in space science and spacecraft design since its foundation in the 1960s, MSSL has played a central role in many missions that have become household names.

One area being pioneered by MSSL today is the construction of smaller and lighter scientific payloads for satellites. The prototype in this photo is for an electron detector which will make measurements of space weather such as solar flares and coronal mass ejections. These can have substantial impacts on communications satellites and the Earth's upper atmosphere.

The detector is the small disc-shaped instrument mounted on the square metal chassis; holding the device is detector physicist Dhiren Kataria, who leads MSSL’s miniaturisation efforts.

In this image, the sensor is attached to a CubeSat chassis, just 10cm along each side. The small size, low weight and standardised shape makes the CubeSat design a popular choice for low-cost space missions, as they can easily piggy-back on other launches.

The detector is about to be tested in a cold vacuum in the chamber in the background, which will simulate the conditions present in low Earth orbit.

Vacuum chamber at MSSL

Dhiren Kataria photo credit: O. Usher (UCL MAPS)

Vacuum chamber photo credit: M. de la Nougerede (UCL MSSL)

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High resolution images

Scientist holding CubeSat and electron detector

Inside the vacuum chamber

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Page last modified on 29 may 13 14:10