Three new possibly habitable ‘super-Earth’ planets discovered

Artist conceptions of the habitable zone planets found so far by Kepler, compared to Earth on the far right. From left to right: Kepler-22b, Kepler-69c, Kepler-62e, Kepler-62f and Earth. Credit: NASA Ames / JPL-Caltech
Artist conceptions of the habitable zone planets found so far by Kepler, compared to Earth on the far right. From left to right: Kepler-22b, Kepler-69c, Kepler-62e, Kepler-62f and Earth.
Credit: NASA Ames / JPL-Caltech

There is some more exciting news from the Kepler space telescope mission – as announced in a NASA press briefing this morning, three more planets have been detected orbiting in their stars’ habitable zones. Larger planets have been found already in this zone around various stars, but what makes this newest discovery so compelling is that these new planets are the smallest found so far in this zone, so-called “super-Earths.” Two of them may even be covered by oceans!

Read MoreThree new possibly habitable ‘super-Earth’ planets discovered

Follow the water? No, follow the Martian salt

The next direction for NASA, in terms of searching for life on Mars, might not be “follow the water” – it might be “follow the salt.” Credit: NASA / JPL / MSSS

You may be familiar with the phrase “follow the water” when it comes to the search for life on Mars, and for good reason – any place on Earth where there is liquid water, there is life. So, logically, the best places to look for evidence of past or present life on Mars would be where there has been liquid water in the past (or perhaps even still is, underground). But now there is also another approach being taken, in terms of possible present-day habitability in particular: follow the salt.

Read MoreFollow the water? No, follow the Martian salt

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.

Read MoreHas Curiosity found Martian rock varnish?

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.

Read MoreAre alien oceans common?