Sub-Saharan Africa produces less CO2 than Europe

  Scientists have produced the first global maps of human emissions of carbon dioxide ever made solely from satellite observations of the greenhouse gas. The maps, based on data from NASA’s Orbiting Carbon Observatory-2 (OCO-2) satellite and generated with a new data-processing technique, agree well with inventories of known carbon dioxide emissions. No satellite before […]

Close galactic encounter leaves “nearly naked” supermassive black hole

  Astronomers using the super-sharp radio vision of the US National Science Foundation’s very long baseline array (VLBA) have found the shredded remains of a galaxy that passed through a larger galaxy, leaving only the smaller galaxy’s nearly-naked supermassive black hole to emerge and speed away at more than 3600 km per second.  The galaxies […]

Cosmic re-ionisation to be explored in the Karoo

  A great mystery confronting astronomers is expected to be resolved with the installation of a new telescope array in the Karoo, the hydrogen epoch of re-ionisation array (HERA). Cosmic re-ionisation corresponds to the epoch when the neutral intergalactic medium (IGM) is re-ionised by the first luminous objects (stars, black holes). Probing this last unexplored […]

Remarkable recovery of satellite studying the sun

  After 22 months, on 21 August 2016, NASA scientists re-established contact with STEREO-B, one of NASA’s solar terrestrial relations observatories, after communication was lost on 1 October 2014. Scientists recently started a monthly recovery operation, using NASA’s deep space network, or DSN, which tracks and communicates with missions throughout space. Their persistence was crowned […]

MeerKAT – the best radio telescope in the Southern Hemisphere

  The MeerKAT First Light image of the sky, released by Minister of Science and Technology, Naledi Pandor, shows unambiguously that MeerKAT is  the best radio telescope of its kind in the Southern Hemisphere. Array Release 1 consists of 16 of an eventual 64 dishes. It is the first significant scientific milestone achieved by MeerKAT […]

Juno spacecraft in orbit around mighty Jupiter

  After an almost five-year journey to the solar system’s largest planet, NASA’s Juno spacecraft successfully entered Jupiter’s orbit during a 35-minute engine burn. Confirmation that the burn had completed was received on Earth on 5 July at 8:53 am (SA time). NASA administrator Charlie Bolden said the Juno NASA mission went boldly where no […]

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