Articles on Satellites

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Lining up potential pitfalls: nonexperts and computers may misinterpret the vertical line in this image as a natural feature rather than a result of a mosaic compilation of multiple satellite images. Google Earth

In sea of satellite images, experts' eyes still needed

Expert image analysts have an important role to play, even in an age of computer interpretation and crowdsourcing.
Space endeavours require capital. And for most African countries, capital is a limited commodity. EPA/Samantha Cristoforetti

Africa and space: the continent starts to look skyward

Many do not associate Africa with the high-tech sphere of "space". However, in recent years, many countries on the continent have woken up to the potential and usefulness of space technology.
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.
A US Chinook similar to the one involved in the gun battle of Takur Ghar. Flickr/The U S Army

Bad space weather may have caused fatal Afghan gun battle

Three American soldiers* may have died in Afghanistan’s battle of Takur Ghar because of disruptions caused by plasma bubbles – a form of space weather – according to a new study. Space weather is normally…
Our moon orbits the Earth in the same way satellites do. Flickr/Alexey Kljatov

Explainer: how do satellites orbit the Earth?

Take a look at the moon and it isn’t hard to imagine it as a planet. A 3,476 kilometres-in-diameter ball of rock, with basalt plains and mountain ranges, whose gravitational pull produces tides here on…

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