Joint NASA/ESA mission proposed to search for life on Europa

Ocean world: new proposed mission would search for evidence of life in Europa’s subsurface water ocean. Photo Credit: NASA/JPL/Ted Stryk

Europa is one of the most fascinating places in the Solar System, and is considered to be at or near the top of the list of worlds to search for possible evidence of life. Beneath its outer ice crust lies a deep and dark salty ocean, thought to be quite to Earth’s own oceans. Could that ocean be inhabited, even if just by microbes? Scientists want to know, and now a new proposal calls for a joint orbiter/lander mission between NASA and ESA (European Space Agency), to try to answer that question.

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Venus beckons part 2: A new NASA collaborative mission with Russia?

Artist’s conception of the Venera-D spacecraft in orbit around Venus. Image Credit: NASA/JPL-Caltech

Last week, Planetaria reported on why NASA should return to Venus, and new technology being developed to help make that happen, especially as in longer-lived landers or rovers. With its extremely hostile conditions, Venus has been much less of a priority in more recent years, at least in terms of surface missions, despite it being Earth’s closest planetary neighbour. But now there may be more impetus towards a new mission – not one that NASA would do alone, but rather a joint mission with Russia, known as Venera-D.

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Venus beckons: Why NASA should return and how new tech will help

First colour images from the surface of Venus (Soviet Venera missions). Image Credit: NASA National Space Science Data Center/Harvard Micro Observatory/Don P. Mitchell

The Solar System has been a busy place in recent years, with missions to a diverse range of worlds, from Mars, Jupiter and Saturn to distant Pluto and even comets and asteroids. Most of these have been NASA spacecraft, which continues to lay the path to exploring such distant places. There are, however, some places which have been visited in the past, decades ago, but now are seemingly no longer a priority, such as Uranus and Neptune. But there is another planet which is actually Earth’s closest neighbour, yet was only last visited in the 1970s and 1980s, by American and Soviet spacecraft – Venus.

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Back to the Moon? New House bill defunds NASA’s Asteroid Redirect Mission

Artist’s conception of the Asteroid Redirect Mission (ARM). The new House bill directs NASA to bypass this mission and return to the Moon instead, before going to Mars. Image Credit: NASA
Artist’s conception of the Asteroid Redirect Mission (ARM). The new House bill directs NASA to bypass this mission and return to the Moon instead, before going to Mars. Image Credit: NASA

Sending human astronauts to Mars is a dream shared by many, but there are still challenges to overcome and the question of just how to accomplish it is a subject of intense debate. Some supporters advocate sending a mission directly to Mars, while others think that returning to the Moon first, for potentially beneficial training, is the way to go. Indeed, former astronaut James Lovell, who flew on two trips to the Moon, has also called for a return to the Moon first. NASA itself has stated its desire to send a crewed mission to a nearby asteroid first, instead of the Moon, going a bit farther into space than the Moon as its idea of preparation for the much longer journey to Mars. A major problem has been that NASA has still not set a firm timetable for such a mission; it wants to go to Mars, but the steps to achieving that goal are still unclear.

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