Does Europa have ‘icy spikes’ on its surface?

Penitentes on the Andes mountains on Earth. Is there something similar on Europa as well? Credit: Wikimedia Commons
Penitentes on the Andes mountains on Earth. Is there something similar on Europa as well?
Credit: Wikimedia Commons

Europa is a fascinating little world, a moon with an icy crust and a subsurface global ocean. The environment is similar to the ice-covered waters at the Earth’s poles. Now scientists think that there may be another feature which is also found on Earth – huge frozen spikes of ice on the surface.

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Has Curiosity found Martian rock varnish?

Before and after image of a rock lasered by Curiosity. The surface of the rock has darkened around the spot hit by the laser. Credit: Los Alamos National Laboratory
Before and after image of a rock lasered by Curiosity. The surface of the rock has darkened around the spot hit by the laser. Credit: Los Alamos National Laboratory

Scientists studying data from the Curiosity rover have found another interesting puzzle, one which may easily have gone unnoticed were it not for one diligent researcher in particular, it was announced last week at the 44th Annual Lunar and Planetary Science Conference at The Woodlands, Texas.

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Are alien oceans common?

Oceans may be common early in the formation of rocky planets. Credit: NASA / JPL-Caltech
Oceans may be common early in the formation of rocky planets. Credit: NASA / JPL-Caltech

One of the unique characteristics of Earth which sets it apart from other known planets is its oceans. Such large bodies of surface water have not yet been found elsewhere, although a number of moons, including Europa, Enceladus and Titan and possibly others, are thought to have subsurface oceans and or seas.

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