earth

Sentinel Snap Shot

Just two weeks after launch, the latest Sentinel satellite has offered a taster of what it will provide for the EU’s Copernicus programme. Sentinel-3A’s very first image, captured at 14:09 GMT on 29 February, shows…


Traffic Control from space

What might look like an abstract artwork is actually a novel antenna, small enough for a minisatellite, to track global ship traffic from orbit. Commercial vessels are mandated to transmit Automatic Identification System (AIS) signals,…


Hayabusa2 is revisiting Earth today

This is what it saw when closing in on Earth. The Hayabusa2, which is flying closer to the Earth for its scheduled swing-by, photographed the moon and the Earth simultaneously using its onboard Optical Navigation…


Sneaky snakes crawling

Animations that compress 25 years of satellite images into just one second reveal the complex behaviour and flow of glaciers in the Karakoram mountain range in Asia. Frank Paul, a glaciologist at the University of…


I’m not really bald

The solar system might be a lot hairier than we thought. A new study publishing this week in the Astrophysical Journal by Gary Prézeau of NASA’s Jet Propulsion Laboratory, Pasadena, California, proposes the existence of…


Cairo, from Sentinel2-A

This image from Sentinel-2A on 13 August features Cairo, in Egypt. The capital of Egypt, Cairo is one of the largest cities in Africa. It has existed for over 1000 years on the same spot…