24
Jan 12

Solar storm strikes Earth

Source: ESA


Large M8.3-class solar flare seen by ESA/NASA SOHO satellite 23 January.
Image credits: ESA/NASA.

A large solar flare yesterday triggered a coronal mass ejection travelling at 1400 km/s that will reach Earth today. An energetic eruption of this level can disrupt satellites, so operation teams at ESA and other organisations are closely monitoring the storm. (read more)

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24
Jan 12

The two faces of Titan's dunes

Source: ESA

Dune fields on Titan (Belet and Fensal)compared with two
similar dune fields on Earth in Rub Al Khali, Saudi Arabia.
Image credit: NASA/JPL–Caltech/ASI/ESA and USGS/ESA
A new analysis of radar data from the international Cassini spacecraft has revealed regional variations amongst Titan's sand dunes. The result yields new clues to the giant moon's climatic and geological history.(read more)
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