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On The Residual Brightness Of Eclipsed Jovian Moons

... satellites can be as small as 400,000 km (say, for Io and Europa in the considered configuration), the distance from Earth at opposition ... This means to subtract 14 from 6, which results in -8. So Europa, half-lit by the Sun, can be a bright -8 magnitude object in Io's sight. ...

Article - Tommaso Dorigo - Jun 23 2018 - 4:16am - 0 attachments

Protecting Mars - And Earth - From What - And Why Bother? Our Inheritance Of Unopened Astrobiological Treasure Chests

... protection, online and on kindle, Ok to Touch Mars? Europa? Enceladus? Or a Tale of Missteps? I come from a family that loves ... abundant in our solar system, maybe there are lifeforms in Europa, Enceladus, Mars, Ceres, Pluto, everywhere. And perhaps indeed they are ...

Article - Robert Walker - May 29 2018 - 6:08pm - 0 attachments

Polar Regions Of Mars Of Outstanding Interest For Astrobiology - Why We Haven't Searched For Life There Yet

... used to explore regions such as the subsurface oceans of Europa and Enceladus and the sensitive sites on Mars even if they have cms ...

Article - Robert Walker - Apr 30 2018 - 4:09pm - 0 attachments

Jupiter Last Friday

... entire surface of the planet. Second, the four moons Io, Europa, Ganymede and Callisto can put up quite a show, as they cross the ...

Article - Tommaso Dorigo - Apr 30 2018 - 1:06pm - 0 attachments

How To Deal With Trash On Moon? More To It Than You'd Think

... Callisto, Saturn's Titan and Beyond Touch Mars? Europa? Enceladus? Or a Tale of Missteps? Case for Moon for Humans - ... Touch Mars? book free online here: Touch Mars? Europa? Enceladus? Or a tale of Missteps? (equivalent to 1938 printed pages ...

Article - Robert Walker - Mar 18 2018 - 11:18pm - 0 attachments

Let's Make Sure Astronauts Won't Extinguish Native Mars Life - Op Ed

... Those take you to my online book in my Touch Mars? Europa? Enceladus? Or a tale of Missteps? (warning, it's around 2000 pages as ... a proposal for a 100% sterile cryobot that we can send to Europa for instance. That is by Brian Wilcox who is working on a 100% sterile ...

Article - Robert Walker - Mar 12 2018 - 12:38am - 0 attachments

Is This Why We Haven't Found Life On Mars Yet? Value Of Actually Looking

... life? in my online and kindle book Touch Mars? Europa? Enceladus? Or a tale of Missteps? - which is the background to this ... is even one already proposed as an icebot to drill into Europa. It would be heated to 500 C throughout the long journey out to Europa - ...

Article - Robert Walker - Feb 21 2018 - 3:47pm - 0 attachments

If Mars Is For Hardy Explorers Only, Where Is The Best Place In The Solar System For First Time Colonists?

... distant places in the solar system such as the seas of Europa. Colonizing deserts on Earth So if you want to find somewhere new ...

Blog Post - Robert Walker - Feb 8 2018 - 2:37pm - 0 attachments

Awful FALSE Christmas Eve Video With 3.2 Million Views Claims Small Nuclear Exchange Plunges World Into -25°C Deep Freeze

This is awful. A science writer and video producer who decided Christmas Eve is just the right time to publish a video claiming FALSELY that a small nuclear exchange of 100 nuclear weapons would destroy all world agriculture for decades. This is based o ...

Article - Robert Walker - Feb 5 2018 - 12:48pm - 0 attachments

To Explore Mars With Likes Of Occulus Rift & Virtuix Omni - From Mars Capture Orbit, Phobos Or Deimos

... project scientist for the Galileo mission and the planned Europa Orbiter mission, the term "robotic exploration" misses the point. NASA ...

Article - Robert Walker - Jan 4 2017 - 12:39am - 0 attachments