November 25, 2016

Carnival of Space 484

Carnival of Space 484 is up at Everyday Spacer

Universe Today - New Theory of Gravity Does Away With Need for Dark Matter

Unlike the traditional view of gravity as a fundamental force of nature, Verlinde sees it as an emergent property of space. Emergence is a process where nature builds something large using small, simple pieces such that the final creation exhibits properties that the smaller bits don’t. Take a snowflake. The complex symmetry of a snowflake begins when a water droplet freezes onto a tiny dust particle. As the growing flake falls, water vapor freezes onto this original crystal, naturally arranging itself into a hexagonal (six-sided) structure of great beauty. The sensation of temperature is another emergent phenomenon, arising from the motion of molecules and atoms.


The more massive the object, the more it distorts space-time, shown here as the green mesh. Earth orbits the Sun by rolling around the dip created by the Sun’s mass in the fabric of space-time. It doesn’t fall into the Sun because it also possesses forward momentum. Credit: LIGO/T. Pyle

Universe Today - Pluto Has a Subsurface ‘Antifreeze’ Ocean


This cutaway image of Pluto shows a section through the area of Sputnik Planitia, with dark blue representing a subsurface ocean and light blue for the frozen crust. Artwork by Pam Engebretson, courtesy of UC Santa Cruz.

Nextbigfuture - Space entrepreneur Robert Bigelow said Nov. 17 that he believes that the Trump administration should as much as double NASA’s budget in the coming years and make plans for a human return to the moon.

The Obama administration, in its fiscal year 2017 budget proposal, requested $19 billion for NASA, less than half a percent of the overall request of more than $4 trillion.

Nextbigfuture - NASA is requesting help to minimize the production, operations, and maintenance (POM) costs of the Space Launch System (SLS), Orion, and Exploration Ground Systems (EGS).

SLS rocket and Orion spacecraft are costing more than $3 billion per year in development costs.

The request would also look at other launch systems. Clearly Spacex offers a lower cost alternative

This request is likely a signal to the Trump administration that NASA is willing to look at other rockets instead of the ridiculously overpriced Space Launch System.

Nextbigfuture - Planetary Resources, Inc., the asteroid mining company, announced today that it has finalized a 25 million euro agreement that includes direct capital investment of 12 million euros and grants of 13 million euros from the Government of the Grand Duchy of Luxembourg and the banking institution Société Nationale de Crédit et d’Investissement (SNCI). The funding will accelerate the company’s technical advancements with the aim of launching the first commercial asteroid prospecting mission by 2020.





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