This is yet another probe that I knew nothing about: NASA's Messenger orbiting the planet Mercury.
This is yet another probe that I knew nothing about: NASA's Messenger orbiting the planet Mercury.
I did indeed know about this, just not got round to searching for the internet link:
https://astronomynow.com/2017/10/05/...to-early-2019/
"I seemed to have sensed also from an early age that some of my experiences as a reader would change me more as a person than would many an event in the world where I sat and read. "
Gerald Murnane, Tamarisk Row
With so much involved I think they are right in taking the necessary time.
By the way, French Guiana is one of our northern neighbors:
https://www.lonelyplanet.com/maps/so...french-guiana/
"I seemed to have sensed also from an early age that some of my experiences as a reader would change me more as a person than would many an event in the world where I sat and read. "
Gerald Murnane, Tamarisk Row
The eternal question...
https://www.space.com/37988-did-life...ical-laws.html
A very interesting theory. Maybe England is on the way to something there.
"Self-organization in physical systems
When energy is applied to a system, the laws of physics dictate how that energy dissipates. If an external heat source is applied to that system, it will dissipate and reach thermal equilibrium with its surroundings, like a cooling cup of coffee left on a desk. Entropy, or the amount of disorder in the system, will increase as heat dissipates. But some physical systems may be sufficiently out of equilibrium that they "self-organize" to make best use of an external energy source, triggering interesting self-sustaining chemical reactions that prevent the system from reaching thermodynamic equilibrium and thus maintaining an out-of-equilibrium state, England speculates. (It's as if that cup of coffee spontaneously produces a chemical reaction that sustains a hotspot in the center of the fluid, preventing the coffee from cooling to an equilibrium state.) He calls this situation "dissipation-driven adaptation" and this mechanism is what drives life-like qualities in England’s otherwise lifeless physical system.
A key life-like behavior is self-replication, or (from a biological viewpoint) reproduction. This is the basis for all life: It starts simple, replicates, becomes more complex and replicates again. It just so happens that self-replication is also a very efficient way of dissipating heat and increasing entropy in that system."
"I seemed to have sensed also from an early age that some of my experiences as a reader would change me more as a person than would many an event in the world where I sat and read. "
Gerald Murnane, Tamarisk Row
I've lost the drift of this logic, sorry...
One of the features of self-organization is the ability to be goal directed. That system has goals and purposes. It makes choices. Machines don't do that.
To say that life may be a "fluke" is an admission of defeat, so England is at least trying to find an explanation which is what science should be doing. Even if the explanation comes down to some conscious choice at some level, that is a better explanation than to say it happened by chance. However, I don't think England wants there to be a conscious choice at all involved.
My blog: https://frankhubeny.blog/
"New research helps solve galactic murders
Why do galaxies stop making stars?
The stars and galaxies we see in the night sky appear unchanging, but they all undergo dynamic processes, evolving throughout their lifetimes. While scientists don’t know exactly what mixture of cosmic events leads to the termination of star formation across galaxies, they have found several key players.
A leading cause of galaxy death is ram-pressure stripping. Drawn in by gravitation attraction, galaxies tend to group together in clusters. The space between galaxies in these clusters is filled with hot gas, and as the galaxies move through the cluster, the gas acts as a headwind. When the wind is strong enough, it can remove loose gas within the galaxy itself — gas that would typically be used to create new stars."
http://www.astronomy.com/news/2017/1...lactic-murders
"I seemed to have sensed also from an early age that some of my experiences as a reader would change me more as a person than would many an event in the world where I sat and read. "
Gerald Murnane, Tamarisk Row
The birth and death of stars is especially interesting.
Notes from the Society for Popular Astronomy:
NANOSAT FLEET PROPOSED TO VISIT 300 ASTEROIDS
European Planetary Science Congress
A fleet of tiny spacecraft could visit over 300 asteroids in just
over three years, according to a mission study led by the Finnish
Meteorological Institute. The Asteroid Touring Nanosat Fleet concept
comprises 50 spacecraft propelled by innovative electric solar wind
sails (E-sails) and equipped with instruments to take images and
collect spectroscopic data on the composition of the asteroids. Each
nanosat would visit six or seven asteroids before returning to Earth
to deliver the data. In the mission scenario, the nanosats fly by
their target asteroids at a range of around 1000 kilometres. Each
nanosat carries a 4-centimetre telescope capable of imaging the
surface of asteroids with a resolution of 100 metres or better. An
infrared spectrometer analyses spectral signatures in light reflected
or emitted by the asteroid to determine its mineralogy. The instru-
ments can be pointed at the target by the use of two internal reaction
wheels inside the nanosats. E-sails make use of the solar wind -- a
stream of electrically charged particles emitted from the Sun -- to
generate efficient propulsion without the need for any propellent.
Thrust is generated by the slow rotation of a tether, attached at one
end to a main spacecraft carrying an electron emitter and a high-
voltage source and at the other to a small remote unit. The spinning
tether completes a rotation in about 50 minutes, tracing out a broad,
shallow cone around a centre of mass close to the main spacecraft.
By altering its orientation in relation to the solar wind, the nanosat
can change thrust and direction
I only wonder what all these mega space projects are going to cost.
"I seemed to have sensed also from an early age that some of my experiences as a reader would change me more as a person than would many an event in the world where I sat and read. "
Gerald Murnane, Tamarisk Row
One good reason for co-operation, though I notice that the idea of collaborating with Russia has been dropped. I guess Trump has taken too much flack for that idea, which is a real pity.