Space In General
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CodeRedR51
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Never gets old.
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I saw this a couple of days ago somewhere, if you want something to give a sense of scale to that little bitty rocket thing you see dropping down and landing. I think it was captioned, "Space-X brings condos down and lands them," or something like that.
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Elon Musk tweeted this while ago when someone said something about adding something to show the scale.
(I recommend reading the thread. It's kinda funny)
(I recommend reading the thread. It's kinda funny)
CodeRedR51
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Now we wait for Falcon Heavy to land 3 at the same time. 
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Hate how it was turned into a negative by some web journalist, probably a non-fan of the man in charge. I thought it was funny banter, because you could easily find many to scale references for the Falcon if those people knew how to use the rest of the net as well as they do twitter.
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Yesterday we had a micromoon and i took some pics with the same camera and objective i used for the supermoon pic last November. Here is the result, a nice comparison gif of a micromoon vs. supermoon:
To be honest, the micromoon seemed huge at the horizon and i couldn't tell the difference until i made a photo and compared it to the supermoon pic.
To be honest, the micromoon seemed huge at the horizon and i couldn't tell the difference until i made a photo and compared it to the supermoon pic.
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An interesting and ample article:
New evidence that all stars are born in pairs
and
New evidence that all stars are born in pairs
excerpt
and
excerpt (emphasis mine)
CodeRedR51
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Monday's SpaceX launch delayed until Friday. Could set up a double header weekend for them.
https://spaceflightnow.com/2017/06/18/launch-of-recycled-falcon-9-rocket-delayed-to-friday/
https://spaceflightnow.com/2017/06/18/launch-of-recycled-falcon-9-rocket-delayed-to-friday/
Dotini
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Hmmm, NASA physicist recommending UFOCapture software for photographing jellyfish saucers over Europe. 
JELLYFISH SPRITES OVER EUROPE: On June 20th, a thunderstorm in Austria unleashed a spectacular display of lightning. Observers on the ground witnessed blinding flashes of crackling light. The most amazing aspect of the outburst, however, was to be found high above the clouds. 80 km high, to be exact, in the realm of the sprites:
Martin Popek photographed the display from his private observatory in Nýdek, Czechia, more than 500 km away from the storm. Such distances are ideal for seeing above the tops of towering thunderclouds: diagram.
"Jellyfish sprite events like these are produced by very impulsive cloud-to-ground lightning flashes draining positive charge from the stratiform rain region in large thunderstorms," explains lightning scientist Oscar van der Velde of the Technical University of Catalonia, Spain. Somehow, in a process that researchers only partially understand, the resulting electric fields drew these sprites up toward the edge of space.
The tops of the sprites were surrounded by a saucer-like halo of red light, notes van der Velde. "The halo is evidence of intense electric fields at 80-90 km shaking up the electrons (colliding with nitrogen to produce light) for such a short time that sprite streamers cannot form. At lower altitudes the field exists longer, allowing the jellyfish sprite streamers to grow from electron avalanches."
Although sprites have been seen for at least a century, most scientists did not believe they existed until after 1989 when sprites were photographed by cameras onboard the space shuttle. Now "sprite chasers" routinely photograph sprites from their own homes. "I used up a Watec 910HX security camera with UFOCapturesoftware to catch my sprites," says Popek. Give it a try!
^from today's edition of spaceweather.com
JELLYFISH SPRITES OVER EUROPE: On June 20th, a thunderstorm in Austria unleashed a spectacular display of lightning. Observers on the ground witnessed blinding flashes of crackling light. The most amazing aspect of the outburst, however, was to be found high above the clouds. 80 km high, to be exact, in the realm of the sprites:
Martin Popek photographed the display from his private observatory in Nýdek, Czechia, more than 500 km away from the storm. Such distances are ideal for seeing above the tops of towering thunderclouds: diagram.
"Jellyfish sprite events like these are produced by very impulsive cloud-to-ground lightning flashes draining positive charge from the stratiform rain region in large thunderstorms," explains lightning scientist Oscar van der Velde of the Technical University of Catalonia, Spain. Somehow, in a process that researchers only partially understand, the resulting electric fields drew these sprites up toward the edge of space.
The tops of the sprites were surrounded by a saucer-like halo of red light, notes van der Velde. "The halo is evidence of intense electric fields at 80-90 km shaking up the electrons (colliding with nitrogen to produce light) for such a short time that sprite streamers cannot form. At lower altitudes the field exists longer, allowing the jellyfish sprite streamers to grow from electron avalanches."
Although sprites have been seen for at least a century, most scientists did not believe they existed until after 1989 when sprites were photographed by cameras onboard the space shuttle. Now "sprite chasers" routinely photograph sprites from their own homes. "I used up a Watec 910HX security camera with UFOCapturesoftware to catch my sprites," says Popek. Give it a try!
^from today's edition of spaceweather.com
CodeRedR51
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Falcon 9 launch and landing today. Launch window starts at 2:10pm 3:10 EDT and extends to 4:10pm EDT.
http://www.spacex.com/webcast
Edit: Launch is now set for 3:10pm EDT
http://www.spacex.com/webcast
Edit: Launch is now set for 3:10pm EDT
Last edited:
Dotini
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Cosmic radiation detected over New England has increased an astonishing 19% over the last two years. Why? It's not because the source of these rays, exploding stars, is increasing. It's because the magnetic fields of the Sun and the Earth are seriously weakening. There may be interesting, even serious effects down the pipeline for us all if this trend persists.
From spaceweather.com comes the report:
NEW ATMOSPHERIC RADIATION RESULTS: For the past two+ years, Spaceweather.com and the students of Earth to Sky Calculus have been monitoring cosmic rays in the atmosphere above California using high-altitude space weather balloons. After more than 100 flights, they find that dose rates have increased over the Golden State by 13% since March 2015.
Now we know the same thing is happening over New England--only more so.
The Earth to Sky team has flown balloons over Maine and New Hampshire four times since 2015, most recently on June 15, 2017. Although the data are relatively sparse compared to the better-sampled west coast, the results are clear. Radiation in the stratosphere over the northeastern corner of the USA is not only stronger than California, but also intensifying much faster--a 19% increase in New England vs. 13% in California.
What's happening? Generally speaking, cosmic rays are increasing throughout the entire solar system. This is because of the sunspot cycle. The sun is currently plunging toward a deep Solar Minimum. As it descends, the sun's weakening magnetic field and flagging solar wind provides less and less shielding against high-energy particles from deep space. Every planet in the Solar System is getting an extra dose.
The difference we see between California and New England is telling us something local about Earth. After the sun's magnetosphere deflects many cosmic rays, Earth's magnetic field and atmosphere provide another line of defense. Our data show that central California is better defended by geomagnetism than New England.
Cosmic rays penetrate commercial airlines, dosing passengers and flight crews enough that pilots are classified as occupational radiation workers. Some research shows that cosmic rays can seed clouds and trigger lightning, potentially altering weather and climate. Furthermore, there are studies ( #1, #2, #3, #4) linking cosmic rays with cardiac arrhythmias in the general population.
From spaceweather.com comes the report:
NEW ATMOSPHERIC RADIATION RESULTS: For the past two+ years, Spaceweather.com and the students of Earth to Sky Calculus have been monitoring cosmic rays in the atmosphere above California using high-altitude space weather balloons. After more than 100 flights, they find that dose rates have increased over the Golden State by 13% since March 2015.
Now we know the same thing is happening over New England--only more so.
The Earth to Sky team has flown balloons over Maine and New Hampshire four times since 2015, most recently on June 15, 2017. Although the data are relatively sparse compared to the better-sampled west coast, the results are clear. Radiation in the stratosphere over the northeastern corner of the USA is not only stronger than California, but also intensifying much faster--a 19% increase in New England vs. 13% in California.
What's happening? Generally speaking, cosmic rays are increasing throughout the entire solar system. This is because of the sunspot cycle. The sun is currently plunging toward a deep Solar Minimum. As it descends, the sun's weakening magnetic field and flagging solar wind provides less and less shielding against high-energy particles from deep space. Every planet in the Solar System is getting an extra dose.
The difference we see between California and New England is telling us something local about Earth. After the sun's magnetosphere deflects many cosmic rays, Earth's magnetic field and atmosphere provide another line of defense. Our data show that central California is better defended by geomagnetism than New England.
Cosmic rays penetrate commercial airlines, dosing passengers and flight crews enough that pilots are classified as occupational radiation workers. Some research shows that cosmic rays can seed clouds and trigger lightning, potentially altering weather and climate. Furthermore, there are studies ( #1, #2, #3, #4) linking cosmic rays with cardiac arrhythmias in the general population.
Tired Tyres
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How come they always cock up the video showing the rocket land again.
CodeRedR51
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2 launches, 2 landings in 3 days. Getting to be normal affair.
some numbers about early airliners? When did they get to 100000 landings, or a million?
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Which has what to do with space..... maybe looking for the General Airplane thread?
CodeRedR51
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Dotini
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GEOMAGNETIC UNREST: Earth is entering a stream of solar wind flowing from a hole in the sun's atmosphere. This is causing geomagnetic unrest around the poles. High-latitude sky watchers should be alert for auroras on July 21st, especially in the southern hemisphere where winter darkness favors visibility. Free: Aurora Alerts
CME SWEEPS ASIDE COSMIC RAYS: On July 16th, a CME hit Earth's magnetic field, sparking two days of geomagnetic storms and beautiful southernauroras. The solar storm cloud also swept aside some of the cosmic rays currently surrounding Earth. Spaceweather.com and the students of Earth to Sky Calculus launched a space weather balloon to the stratosphere hours after the CME arrived. We detected a 7% decrease in X-rays and gamma-rays (two tracers of secondary cosmic rays). Neutron monitors in the Arctic and Antarctic recorded similar decrements. For instance, these data from the Bartol Research Institute show a nearly 8% drop in cosmic ray neutrons reaching the South Pole:
This is called a "Forbush Decrease," named after physicist Scott E. Forbush who first described it in the 20th century. Wherever CMEs go, cosmic rays are deflected by magnetic fields inside the solar storm clouds. As a result, when solar activity is high, cosmic radiation around Earth is relatively low--a yin-yang relationship that holds throughout all phases of the solar cycle.
Lately, cosmic rays around Earth have been intensifying as the solar cycle plunges toward minimum. The CME of July 16th reversed that trend--but only for a few days. Solar activity has returned to low levels and cosmic rays are on the rise again.
Why do we care about cosmic rays? For one thing, they penetrate commercial airlines, dosing passengers and flight crews so much that pilots are classified as occupational radiation workers. Some research shows that cosmic rays can seed clouds and trigger lightning, potentially altering weather and climate. Furthermore, there are studies ( #1, #2, #3, #4) linking cosmic rays with cardiac arrhythmias in the general population.
^from today's edition of spaceweather.com
CME SWEEPS ASIDE COSMIC RAYS: On July 16th, a CME hit Earth's magnetic field, sparking two days of geomagnetic storms and beautiful southernauroras. The solar storm cloud also swept aside some of the cosmic rays currently surrounding Earth. Spaceweather.com and the students of Earth to Sky Calculus launched a space weather balloon to the stratosphere hours after the CME arrived. We detected a 7% decrease in X-rays and gamma-rays (two tracers of secondary cosmic rays). Neutron monitors in the Arctic and Antarctic recorded similar decrements. For instance, these data from the Bartol Research Institute show a nearly 8% drop in cosmic ray neutrons reaching the South Pole:
This is called a "Forbush Decrease," named after physicist Scott E. Forbush who first described it in the 20th century. Wherever CMEs go, cosmic rays are deflected by magnetic fields inside the solar storm clouds. As a result, when solar activity is high, cosmic radiation around Earth is relatively low--a yin-yang relationship that holds throughout all phases of the solar cycle.
Lately, cosmic rays around Earth have been intensifying as the solar cycle plunges toward minimum. The CME of July 16th reversed that trend--but only for a few days. Solar activity has returned to low levels and cosmic rays are on the rise again.
Why do we care about cosmic rays? For one thing, they penetrate commercial airlines, dosing passengers and flight crews so much that pilots are classified as occupational radiation workers. Some research shows that cosmic rays can seed clouds and trigger lightning, potentially altering weather and climate. Furthermore, there are studies ( #1, #2, #3, #4) linking cosmic rays with cardiac arrhythmias in the general population.
^from today's edition of spaceweather.com
