Friday, January 26, 2018

How NASA lost a Satellite, And an Amateur Radio Astronomer Found It.

Amateur search for dead spy satellite turns up undead NASA mission

Earlier this week, an amateur radio astronomer named Scott Tilley decided to have a look for the presence of secret military satellites. It's something he apparently does semi-regularly, and in this case his search was inspired by the Zuma satellite, a secret US government payload that was reportedly lost on its way to space.
From article, (Earlier this week, an amateur radio astronomer named Scott Tilley decided to have a look for the presence of secret military satellites. It's something he apparently does semi-regularly, and in this case his search was inspired by the Zuma satellite, a secret US government payload that was reportedly lost on its way to space. 
 Instead, he found an undead NASA mission. 
Given the clear indication of a radio signal, Tilley matched its orbit to a NASA satellite called IMAGE. IMAGE was launched back in 2000 with a mission of studying Earth's magnetosphere. Over five years of operation, it created a three-dimensional map of the charged particles that move along Earth's magnetic field lines. But contact was lost in 2005, and NASA eventually attributed that to a one-time event in the power system that the satellite wasn't designed to recover from.
But the accident review noted that IMAGE's orbit sporadically left it in Earth's shadow, which would reset the power system as the craft's solar panels went dark. The next expected event of the sort was in 2007, but if anyone at NASA tried to contact the probe after that, nobody seems to be aware of that effort now.
Since we already knew IMAGE existed, however, Tilley put his re-discovery aside for a bit. But as he switched to other frequencies, he found that IMAGE was actively transmitting data. At this point, he did some searches and found that IMAGE was considered lost due to the power failure. So he decided to take a more careful look at his signal and confirmed that it contained signs that the satellite was rotating at a rate that was consistent with IMAGE. Since then, several other amateurs have confirmed his findings.
We have no sense of what shape the satellite is currently in or even how much of its hardware is still operational. But one of the mission's original co-investigators, Rice's Patricia Reiff, found Tilley's blog post and commented that, "There are fantastic instruments (active and passive) who could definitely provide useful scientific data." She said she would try to get Tilley the information he would need to extract data from the signals he was monitoring.
Meanwhile, a NASA scientist told AmericaSpace that “We’re still not sure it really is IMAGE, but we are working to identify people knowledgeable about the mission after all this time and working on getting all the appropriate scripts and software in place just in case it is IMAGE." Given the relative costs of launching vs. maintaining contact with a satellite, if IMAGE can still provide useful data, Tilley just may have given NASA scientists a bargain.)



Tesla, BMW, Chevrolet and Nissan are investing in Lithium Nickel Manganese Cobalt Oxide Batteries. But could Lithium-Sulfur batteries be the next step in Electric Car Batteries?

Breakthrough Battery Technology Uses Manganese Sheets

Further demand for high grade, high purity manganese may be driven by new technology thanks to breakthroughs like the new discovery by researchers that using a nanosheet of manganese dioxide increases the performance of lithium-sulphur batteries significantly. Manganese companies watchful of development include Ferroglobe PLC (NASDAQ: GSM), Glencore PLC (LSE: GLEN), Anglo American PLC (LSE: AAL), and Maxtech Ventures (TSX: MVT) (OTC: MTEHF).

From article, (Further demand for high grade, high purity manganese may be driven by new technology thanks to breakthroughs like the new discovery by researchers that using a nanosheet of manganese dioxide increases the performance of lithium-sulphur batteries significantly.

 High grade, high purity manganese is used as a primary cathode material in lithium-ion manganese batteries or NCM batteries. The NCM formulation of batteries is the slated as the next generation of battery cathodes, after the lithium-nickel-cobalt-aluminum design (NCA) battery.

International miners that produce manganese have seen positive growth of global demand and price increases. Majors including Ferroglobe PLC (NASDAQ: GSM), a leading producer of manganese, Anglo American PLC (LSE: AAL), a large miner of manganese worldwide, and Glencore PLC (LSE: GLEN), a highly diversified company that produces significant manganese, have all moved to expand manganese resources this year.

Large producers are shifting to acquire existing manganese resources, while one junior mining company is advancing manganese resources in Brazil through near term production. Maxtech Ventures (TSX: MVT) (OTC: MTEHF) is moving to develop manganese with a prominent local distribution channel in place.

One of the most promising battery technology breakthroughs comes from the University of Waterloo in Canada, where a team of researchers has found that using a nanosheet of manganese dioxide increases the performance of lithium-sulphur batteries significantly.

This boost has the potential to increase the range of an electric vehicle by up to three times for the same weight of lithium-ion battery.


The study brings the Li-S battery one step closer to realization.


In the model used in the research, the manganese dioxide nanosheet transforms the sulfur cathode used in the LI-S battery into a high-performance cathode capable of recharging over 2000 times.


Sulfur by virtue of its abundance, cheapness, and light weight make for an ideal battery material, but hasn't worked well because it dissolves easily in electrolyte solution. While there are various methods for stabilizing sulfur including the use of metallic titanium oxide, manganese dioxide nanosheets have been shown in this study to work much better.  

This technology has been known since the 19th century, but sulfur science has taken a backseat in that time and this study gives the first real glimmer of hope for sulphur as a cathode material.

While manganese-based batteries are not new to the industry, the model described in the current research can only accelerate demand.

Lithium Nickel Manganese Cobalt Oxide (NMC) already form a major segment of batteries used in EVs. Tesla recently signed a five-year agreement with NMC battery researcher Dr. Jeff Dahn to help improve the technology and bring costs down. The EV divisions of other major car makers such as BMW, Chevrolet and Nissan are also keen on adopting NMC battery technology for their vehicles.

Bridging the gap in demand is the lucrative challenge for mining companies who can bring new supplies to the table in the near term.)