Space

"Super Positive" Outcomes For Search For Life In Hidden Extraterrestrial Oceans Of Europa And Enceladus

The ancient oceans of Jupiter's Europa and Saturn's tiny Enceladus are hidden beneath an ice sheet kilometers thick. They may have ET microbes, even multicellular swimming creatures around hydrothermal vents. Or they could have imperfectly repro ...

Article - Robert Walker - Nov 19 2019 - 11:55am

Projects To Get To Space As Easily As We Cross Oceans- A Million Flights A Year Perhaps- Will We Be Ready?

accelerate the fuel. And also as there is no physical contact with the track, friction can be almost zero. ...

Article - Robert Walker - May 18 2020 - 1:13pm

Will Astronauts Need To Augment Lunar Gravity? If So, How?

friction between the trains and the tracks we can Use maglev trains  so that there is no physical contact ...

Article - Robert Walker - Sep 3 2017 - 6:23am

Where Should we Send our Rovers to Mars to Unravel Mystery of Origin of First Living Cells?

The origin of life remains a great mystery in biology. Continental drift has erased most of the record, until all that's left of the first half billion years of evolution are some millimeter sized zircons embedded in later rocks. These can tell us th ...

Blog Post - Robert Walker - Dec 24 2016 - 10:39am

Why ET Populations Can't Continue To Expand For More Than A Few Millennia

quadrillions of colonists, as they disappear out of contact beyond the light speed communications barrier, some ...

Article - Robert Walker - Aug 1 2017 - 4:36am

Could Anything Make Humans Extinct In The Near Future?

never are contacted. If nothing else, then the uncontacted tribes, which still exist in a few islands ...

Article - Robert Walker - Dec 17 2018 - 11:00pm

Giant Asteroid Headed Your Way?- How We Can Detect And Deflect Them

We get many sensational news stories, saying a giant asteroid will hit Earth, or will nearly miss us. Several so far this year. Many of us worry about these things. So what is the truth behind them? Actually astronomers have this well in hand for the larg ...

Article - Robert Walker - Apr 6 2016 - 3:16pm

Can JP Aerospace's Future Giant Airships Slowly Accelerate To Orbit? Looking At The Numbers

Untitled Document A while back I wrote my article " Can Giant Airships Slowly Accelerate to Orbit Over Several Days ". It lead to a lot of discussion and as usual whenever you discuss John Powell's ideas, there were physicists and aeroengin ...

Article - Robert Walker - Dec 17 2018 - 10:57pm

So You Thought We Could Terraform Mars Quickly? Large Space Habitats Instead Open Solar System To Humans

SpaceX have a striking video showing Mars spinning faster and faster, transforming from the current red Mars to a planet with a small ocean and with the deserts tinged with green in seven revolutions. Of course that is poetic exaggeration- it wouldn' ...

Article - Robert Walker - Oct 27 2018 - 10:05am

Are There Habitats For Life On Mars?- Salty Seeps, Clear Ice Greenhouses, Ice Fumaroles, Dune Bioreactors,...

could form with surface temperatures as low as 180°K (-90°C). Salts in contact with them could then form ...

Article - Robert Walker - Jan 11 2017 - 10:54pm