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Articles on Satellite technology

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The electromagnetic spectrum we can access with current technologies is completely occupied. This means experts have to think of creative ways to meet our rocketing demands for data. NASA Johnson/Flickr

We’re using lasers and toaster-sized satellites to beam information faster through space

Free space optical communication will allow the same connectivity in space we already have on Earth. And this will provide benefits across a number of sectors.
The vast amounts of data from more than 650 Earth observation satellites are transforming how we see and shape urban landscapes. Pitney Bowes Australia courtesy PSMA

Digital Earth: the paradigm now shaping our world’s data cities

The huge volume and high quality of data streaming down from Earth observation satellites are transforming how we see and shape our cities.
Seismic shockwaves after a meteorite’s collision could affect systems all over the planet. solarseven/Shutterstock.com

More bad news for dinosaurs: Chicxulub meteorite impact triggered global volcanic eruptions on the ocean floor

Research suggests a new threat to life on Earth from the meteorite's crash: Via seismic waves, the impact triggered massive undersea eruptions, as big as any ever seen in our planet's history.
Water mass enters the ocean from glaciers such as this along the Greenland coast. NASA/JPL-Caltech

Contributions to sea-level rise have increased by half since 1993, largely because of Greenland’s ice

Greenland's ice is largely responsible for the accelerating pace of sea-level rise. A new analysis shows that, while Greenland accounted for just 5% of the rise in 1993, that figure rose to 25% by 2014.
A new analysis of historic weather balloon data reveals that the troposphere has been warming as climate models predicted. NOAA/Wikimedia Commons

Climate meme debunked as the ‘tropospheric hot spot’ is found

Climate models have been criticised because observations could not find the predicted "hot spot" of strong warming in the troposphere. But analyses now show that the tropospheric hot spot is indeed real.
OK, but which sea’s level? And how do you know what it is? Wally Gobetz

Explainer: how do you measure a sea’s level, anyway?

The tides come in, the tides come out. But what is a sea's level? Technology has evolved since we first started gauging the height of the ocean in comparison to the land.
An artist’s concept of two NASA Earth-orbiting cube satellites with a typical volume of just one litre (10cm x 10cm x 10cm). NASA/JPL-Caltech

Space treaties are a challenge to launching small satellites in orbit

We're already building satellites that can sit in the palm of your hand. But getting them into orbit can be a challneg, and not only for technical reasons.
Remote households trying to telecommute rely on satellite connections to high-speed broadband – which sometimes don’t work. AnnieAnniePancake/Flickr

NBN benefits regional centres, but rural Australia is still left wanting

Communications Minister Malcolm Turnbull reiterated the importance of the National Broadband Network (NBN) for regional and rural Australia in an address to the NBN Rebooted conference in Sydney last week…
We need more detailed information to adequately track planes. Robert Couse-Baker

MH370 should make us rethink how we monitor planes

Search ships may be honing in on the black box from missing Malaysian Airlines Flight MH370 after weeks of searching. But whether they are successful or not, the difficulty they have encountered along…

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