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Heart Sun’s neutrino heartbeat


The researchers based in Gran Sasso National Laboratory near L’Aquila, Italy, about 1 kilometer into the ground, were able, even in 2007 to detect some of the neutrinos from the Sun, essentially confirming that the theorized fusion reactions, which include the presence of berilium, are correct.

Science20 reported at that time about Sun’s neutrino heart beat. The researchers were able to detect low level neutrinos in the range of 0.862 MeV. They used the Borexino detector to get a glimpse into the universe of these tiny neutrinos.

Sun’s neutrino heartbeats are about 2-3 pe hour. Watch the timer in the video from above.

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science

Does the Sun have siblings?


It is believed that yes, the Sun does have siblings, but they’re hard to locate. Some believe one of the siblings is 100 light-years away, in the Hercules constellation. It seems that the Sun came from a group of several hundred stars and then it simply went away.

Since the Sun has a specific combination of elements, it is believed that the siblings should have about the same combination of elements in them. Searching among billions and billions of stars is hard, but the astronomers will likely find many siblings of Sun’s.

Why do we care so much about Sun’s siblings? Since its siblings are about its age we might expect some of them to have planets much like our own. Maybe there is life out there and we may find our galactic relatives.

In any ways, when we will meet the ET we will mark that as the biggest thing in our modern history. Will we be nice to them or vice-versa?

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geek learn science

How much water do you need to extinguish the Sun?


Fraser Cain has a great video responding to this very question: how much water would extinguish the Sun? The answer is: none, nada. Any water you add to the Sun will make the Sun shine brighter and get bigger and “burn” hotter and faster.

The Sun does not burn in the sense that you got an object then light it up and then the chemical reaction of burning occurs. The Sun generates the heat by turning hydrogen atoms into helium atoms in a reaction called proton-proton reaction. That is the fusion reaction.

So, if you add any matter into the Sun, then that matter will be used to further help with fusion. So, since water had hydrogen and oxygen in it, the Sun will use the hydrogen to build more helium and will use the oxygen to build more heavier elements up to iron and so forth.

The only way to cool down the Sun is to send a big stream of water at it with the speed of light. This would rip parts of the Sun away and will make it smaller and thus colder with time. But, hey, you could use any possible matter if you could and get basically the same result.

So, no, you can’t extinguish the Sun with water because the Sun is not burning.

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geek learn science

Why doesn’t the sun steal the Moon?


Because it is in Earth’s gravitational well or in Earths Hill sphere which goes up to 1.5 million kilometers out in space. From this sphere you can only get away if you break the escape velocity. For earth the escape velocity is about 5 km/s, but where the Mon is it is about 1.2 km/s. The Moon orbits at about 1km/s so it won’t get away from Earth.

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learn science

7 days till the end of the world in 2012


Well, the end of the world as we knew it back then. A big double solar flare has missed us by a week. Should it have fired a week earlier in 2012 august 23rd we would have had all our electronics destroyed, sending us back to the stone age. We were darn close at that time. Such a big flare has hit Earth in 1859 and you could see auroras even in Tahiti.

What can we do to fight something like this? Nothing, just prepare. When such a flare comes back again, and such flare will hit the Earth in the next 10 years, we should simply turn off everything. Complete silence for a couple of minutes. Silence.

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science

What does the Sun sound like?


the sun sounds like a big old grumpy man, that only knows how to mumble. If you speed up 40 days of recording into a few seconds you hear the sound recorded in the video from above.

In any case, the mechanical waves that fly through the Sun day in, day out are the source of that sound. The sun is everything but a quite place and sooner or later you will see a ton of such symphonies created as a result of EM waves or other phenomenons.

Hail to the Sun.

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geek learn science

Manhattanhenge feat. Neal deGrasse Tyson


Manhattanhenge is a term given by Neal deGrasse Tyson on American Museum of Natural History’s site to the alignment of streets in the East- West direction in Manhattan, where you can see, twice a year, how the sunset lines up with New York City’s street grid showing spectacular views.

From SciFri:

Neil deGrasse Tyson, director of the Hayden Planetarium in New York, identified the cosmic event over a decade ago and coined it Manhattanhenge. In this video from 2009, we watched the sun from 42nd Street, along with about 50 other astronomical enthusiasts.

Neil asks:

What will future civilizations think of Manhattan Island when they dig it up and find a carefully laid out network of streets and avenues? Surely the grid would be presumed to have astronomical significance, just as we have found for the pre-historic circle of large vertical rocks known as Stonehenge, in the Salisbury Plain of England. For Stonehenge, the special day is the summer solstice, when the Sun rises in perfect alignment with several of the stones, signaling the change of season.

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Lightning on Earth created by the Sun


Who would ever think that the Sun generates lightnings on Earth? Well, given the fact that we get a lot of energy from the Sun, this should not come as a surprise. DNews reports that cosmic rays and solar wind cause lightnings on Earth.

An interesting result from this study:

The results could prove useful for weather forecasters, since these solar wind streams rotate with the Sun, sweeping past the Earth at regular intervals, accelerating particles into Earth’s atmosphere. As these streams can be tracked by spacecraft, this offers the potential for predicting the severity of hazardous weather events many weeks in advance.

via Eurekalert.

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geek science

Tornadoes on the Sun? Your read that right!


Space.com reports that there are tornadoes on the Sun. The Solar Dynamics Observatory has watched the sun on 29th and 30th April 2014 and saw that, instead of the spurs of matter to just go up and away or back as you’d usually see, that highly condensed plasma was behaving like a tornado due to the intense magnetic forces over there.

Those tornadoes are hard to find, but they do happen. Next up: solar beings :))

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Vsauce: quasars can be brighter than the galaxies they’re in – most brightest thing in the Universe explained

Magnitude is a number that tells you how bright an object is, and it can be relative or absolute. Vsauce explores the Universe of absolute magnitude and finds out that the Sun has a magnitude of 4.83, yet a star called R136a1, 256 times more massive than the Sun, has a magnitude of -12.6 and 8.7 million times brighter than our Sun. Lower absolute magnitudes mean more brightness.

Vsauce posted a link to a magnitude calculator that will be handy to me in the future. So, the more you go into negative magnitudes, the brighter that thing is. Is R136a1 the brightest thing in the Universe? Not even close.

The brightest thing in the Universe is the quasars, the first discovered one being 3C 273 with a magnitude of -26.7, which means that it is 4 trillion times more brighter than the Sun. If you would put 3C 273 at a distance of 33 light years away it would shine as bright as the Sun.

The quasars are black holes that eat up matter and while it is eating up that matter a disk forms around them (accretion disk). These disks spin around the black hole at great speeds while the matter from within if engulfed in the black hole. This rotation generates a lot of heat and light and thus we notice it by how bright it is.

Quasars are thousands of times more brighter than the galaxies with billions of stars they’re in. Oh, and they generate also radiation jets that could affect planets thousands of light years away. Wow!