Showing posts with label moon. Show all posts
Showing posts with label moon. Show all posts

Friday, May 22, 2020

Accelerated interstellar spacecraft based on magnetic levitation on moon

NASA says Maxar will build first big piece for Gateway in lunar GeekWire

I have noticed that things are moving in this direction which is becoming somewhat secretive like many other major scientific discoveries. We must consider the advice of the most enlightened mind in the last decade of science, and that can only be Stephen Hawking, who said to hasten the colonization of other planets because a catastrophe can destroy the earth at any time. Stephen didn't even think that a virus could be the cause you can read below and let's get back to the main topic
A spacecraft launched from a massive Magnetic Levitation Accelerator located on the moon could reach relatively high relativistic speeds at this stage, which no other means of propulsion can do practically and start from the great Hawking project and many other space science projects we can succeed.

 Magnetic Levitation Accelerator model

4 Coil Ring Accelerator Digital Magnetic Levitation Cyclotron High-tech Physics Model Diy Kit Kids Toys Gift

If such a ship without a human crew had a compact nuclear fusion reactor, say in a few decades, then humanity could have spacecraft that could reach Alpha Centauri and a few other nearby star systems with planets like Proxima b one of the nearest planets the closest planet outside the Solar System, "A telluric exoplanet, which is in the habitable zone of the star Proxima Centauri.in just a few years. decades".

The two bright stars are (left) Alpha Centauri and (right) Beta Centauri, both binaries. The faint red star in the center of the red circle, at right angles to both and south-east of Alpha is Proxima Centauri, intensely red, smaller in size, weaker in brightness and a distant third element in a triple star system with the main close pair forming Alpha Centauri. Taken with Canon 85mm f/1.8 lens with 11 frames stacked, each frame exposed 30 seconds. image wikipedia

People could withstand huge accelerations using liquid and gel capsules for compensation or even a rotating sector of the ship that by centrifugal force would compensate for the ship's acceleration. Such a hybrid ship would also have a magnetic parachute that would activate when meeting the Alpha Centauri heliopause.


Voyager - NASA

I don't know, but let's look at some numbers ... speed of light: 300,000 (3 hundred thousand) km/second!!! alpha Centauri: 4.3 light-years ... if 10% of the speed of light could be obtained, ie 30 thousand km / s, then the journey would take 43 years ... ok ... the fastest thing launched by man, voyager 1, travels at 17.26 km / s ... so we should, in exact numbers, get from 17.26 to 29979 km / s, that is 1736 times faster than mankind has managed so far, to reach +4 decades! You have low gravity per month, but how much are the acceleration increase and the braking problem?


Energies Free Full-Text A Study on a Linear Magnetic-Geared


The system would be feasible for launching anything into orbit without any rocket systems. The moon has an orbital speed of 1022m / s so very low, with a rifle you can shoot a bullet at a higher speed. It would have the advantage that it does not require rocket fuel or expensive rocket engines and you can launch large loads. To reach 1100m / s with an acceleration of 1g, 60km is enough.

Since even people can bear 2-3 G FORCE without big problems, a perfectly achievable 30 and 20 km launch ramp would be enough but of course, ramps or even hundreds of km can be built to reach the desired speeds, regardless of costs considering that it is about the survival of the human species that is self-destructing since 1900. Future galactic colonization ships are the launchpad to Mars and many other planets and solar systems like Alpha Centauri. You can't leave the earth with a ship big enough to carry everything you need, but you can get off the moon.



United Arab Emirates Has a Plan to Colonize Mars Universe Today

You can make it from pieces that connect like this international station that was also made of pieces launched one by one, only that from the moon you can launch much larger pieces. Until we have a monthly station, I don't think we'll reach Mars with a human crew at least not very soon.

The centrifugal force would be very high at the speeds required only for launching into orbit and it would be extremely difficult to make this ring. It would not have special advantages over a linear accelerator that is much easier to achieve technically.


It cannot move in a circle, the centrifugal force becomes excessive. Even at a modest, strong, and enormous speed. Let's take a ring with a radius of 10km and an object that goes with 1km / sec so the monthly orbital speed which is very low compared to the cosmic speeds. The centrifugal force will be equal to 100x the mass of the object. And the objects inside the supposed ship will suffer the same force, it's as if they are exposed to 100g so you can't have passengers in the ship even at this modest speed because people can't tolerate more than 5-6g and that for a long time. Besides, the ring should be very strong to withstand such forces.

 Magnetic levitation should withstand this force so it should in turn be very high totally unlikely to be achieved practically. There are fantasies that some launch but they don't think (and they haven't been to school either). To have the only 5g on a 10km ring, the speed range would be only 223m / s. To reach the launch speed on the moon with only 5g centrifugal force would require a ring with a radius of 200km. It is much easier to make a linear accelerator.

All these physio-fusion-nuclear (see, you can do in 3 words.. we have a weak point. We do not know how to produce energy other than through thermal energy with thermal machines that require a hot and a cold source. The hot source is the fissile material but the cold source in space does not exist, the energy can be dissipated only by radiation which is very inefficient compared to cooling by conduction to another substance (air/water). This drastically limits us to the power we can get from a space reactor. At least until we find another way to produce electricity to power various other motors we can not hope for too much power in space.

Saturday, January 14, 2017

Total Solar Eclipse 2017: When, Where and How to See It (Safely)

Map showing the path of totality for the Aug. 21, 2017 total solar eclipse. Credit: Fred Espenak/NASA GSFC
On Aug. 21, 2017, American skywatchers will be treated to a rare and spectacular celestial show — the first total solar eclipse visible from the continental United States in nearly four decades.

Next year's "Great American Total Solar Eclipse" will darken skies all the way from Oregon to South Carolina, along a stretch of land about 70 miles (113 kilometers) wide. People who descend upon this "path of totality" for the big event are in for an unforgettable experience, said eclipse expert Jay Pasachoff, an astronomer at Williams College in Massachusetts.

"It's a tremendous opportunity," Pasachoff told Space.com. "It's a chance to see the universe change around you.

A total solar eclipse last darkened soil on the U.S. mainland on Feb. 26, 1979. But August 2017 will mark the first time in 99 years that such an event is "readily available to people from coast to coast," Pasachoff said.

Total Solar Eclipse 2017 Photo: Eclipse2017.org


A rare event

The fact that total solar eclipses occur at all is a quirk of cosmic geometry. The moon orbits an average of 239,000 miles (384,600 kilometers) from Earth — just the right distance to seem the same size in the sky as the much-larger sun

But most solar eclipses are of the partial variety, in which the moon appears to take a bite out of the sun's disk. Indeed, two to five solar eclipses occur every year on average; total eclipses happen just once every 18 months or so. (Eclipses are relatively rare because the moon's orbit is inclined about 5 degrees relative to that of Earth. If the two bodies orbited in exactly the same plane, a solar eclipse would occur every month, during the moon's "new" phase.)

How Solar Eclipses Work: When the moon covers up the sun, skywatchers delight in the opportunity to see a rare spectacle. See how solar eclipses occur in this Space.com infographic. Credit: Karl Tate, SPACE.com Contributor

Furthermore, the narrow path of totality is often inaccessible to skywatchers — most of Earth is covered by water, after all — so a total solar eclipse that occurs over populated areas is quite special. Indeed, the August 2017 event will be the first one whose totality path lies completely within the United States since 1776, experts have said.

That path goes from the Oregon coast through Idaho, Wyoming, Nebraska, Kansas, Missouri, Illinois, Kentucky, Tennessee, Georgia, North Carolina and South Carolina. While just 12 million people or so live within the narrow band, perhaps 220 million reside within a day's drive of it, according to Space.com skywatching columnist Joe Rao. [Incredible Solar Eclipse View Shot During Alaska Airlines Flight (Video)]

Pasachoff advises folks to make that drive when the time comes.

"Though the rest of the continental U.S. will have at least a 55 percent partial eclipse, it won’t ever get dark there, and eye-protection filters would have to be used at all times even to know that the eclipse is happening. The dramatic effects occur only for those in the path of totality," Pasachoff said in a statement.

"If you are in that path of totality, you are seeing the main event, but if you are off to the side — even where the sun is 99 percent covered by the moon — it is like going up to the ticket booth of a baseball or football stadium but not going inside," he added.

Pasachoff himself plans to be there. He has observed 63 solar eclipses to date, and not just for fun: The events provide a rare opportunity to study the sun's wispy outer atmosphere, which is called the corona. (The sun's overwhelming brightness usually drowns out the faint corona.)

Temperatures in the corona top 1.8 million degrees Fahrenheit (1 million degrees Celsius), making the region much hotter than the solar surface, which is just 11,000 degrees F (6,000 degrees C) or so. How the corona gets so hot has puzzled scientists for decades, and Pasachoff and his colleagues aim to gather some useful data during the Great American Eclipse.

"How energy is injected into the corona is one of the things we'll be investigating," Pasachoff told Space.com.


Be safe!

If you do plan to observe the August 2017 eclipse, remember: NEVER look directly at the sun without proper eye protection, except when the solar disk is completely occluded (during the brief period of totality); serious and permanent eye damage can result.

"Proper eye protection" includes specially made solar filters, eclipse glasses or No. 14 welder's glass. You can also observe the eclipse indirectly, by making a pinhole camera or watching shadows cast by trees. (The gaps between leaves act as natural pinholes.)

You should never look directly at the sun, but there are ways to safely observe an eclipse. See how to safely observe a solar eclipse with this Space.com infographic. Credit: Karl Tate, SPACE.com Contributor

To learn more about how to safely observe the sun, check out this Space.com infographic.

Safely See the Sun – Build a Shoebox Pinhole Camera


Finally, if you miss out on the August 2017 event, don't despair — you'll get another chance seven years later. In 2024, a total solar eclipse will darken the skies above Mexico and Texas, up through the Midwest and northeastern U.S

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The above post is reprinted from materials provided by Space. Note: Materials may be edited for content and length.

2018 Full Moon Calendar

Moon Calendar 2018 photo: efendicafe
The moon shows its full face to Earth once a month. Well, sort of.

In fact, the same side of the moon always faces the planet, but part of it is in shadow. And, in reality most of the time the "full moon" is never perfectly full. Only when the moon, Earth and the sun are perfectly aligned is the moon 100 percent full, and that alignment produces a lunar eclipse. And sometimes — once in a blue moon — the moon is full twice in a month (or four times in a season, depending on which definition you prefer). 

The next full moon of the year will be in February and rise on Feb. 10, a Friday night. It will peak at 7:33 p.m. EST (0033 Saturday morning GMT). The February full moon is known as the Snow Moon, among its other names. 


he first full moon of January occured on Thursday, Jan. 12. It peaked at 6:34 a.m. EST (11:34 Universal Time). The Algonquins of New England called it the Wolf Moon, according to the Farmer's Almanac. Other cultures have different names, including Holiday Moon (Chinese), Cold Moon (Cherokee), Quiet Moon (Celtic) and Rainbow Fish Moon (New Guinea). 

Full moons in 2017

Many cultures have given distinct names to each recurring full moon. The names were applied to the entire month in which each occurred. The Farmer's Almanac lists several names that are commonly used in the United States. The almanac explains that there were some variations in the moon names, but in general, the same ones were used among the Algonquin tribes from New England on west to Lake Superior. European settlers followed their own customs and created some of their own names.

This is when full moons will occur in 2017, according to NASA:

Date Name U.S. East UTC
Jan. 12 Wolf Moon 6:34 a.m. 11:34
Feb. 10 Snow Moon 7:33 p.m. 00:33 (2/11)
Mar. 12 Worm Moon 10:54 a.m. 15:54
Apr. 11 Pink Moon 2:08 a.m. 07:08
May 10 Flower Moon 5:43 p.m. 22:43
June 9 Strawberry Moon 9:10 a.m. 14:10
July 9 Buck Moon 12:07 a.m. 05:07
Aug. 7 Sturgeon Moon 2:11 p.m. 19:11
Sept. 6 Harvest Moon 3:03 a.m. 08:03
Oct. 5 Hunter's Moon 2:40 p.m. 19:40
Nov. 4 Beaver Moon 12:23 a.m. 05:23
Dec. 3 Cold Moon 10:47 a.m. 15:47

Additional full moon names

Other Native American people had different names. In the book "This Day in North American Indian History" (Da Capo Press, 2002), author Phil Konstantin lists more than 50 native peoples and their names for full moons. He also lists them on his website, AmericanIndian.net.

Amateur astronomer Keith Cooley has a brief list of the moon names of other cultures, including Chinese and Celtic, on his website. For example:

Chinese moon names

Month Name                  Month         Name
January Holiday Moon        July  Hungry Ghost Moon
February Budding Moon        August  Harvest Moon
March Sleepy Moon    September  Chrysanthemum Moon
April Peony Moon    October  Kindly Moon
May Dragon Moon           November White Moon
June Lotus Moon             December Bitter Moon

Full moon names often correspond to seasonal markers, so a Harvest Moon occurs at the end of the growing season, in September, and the Cold Moon occurs in frosty December. At least, that's how it works in the Northern Hemisphere.

In the Southern Hemisphere, where the seasons are switched, the Harvest Moon occurs in March and the Cold Moon is in June. According to Earthsky.org, these are common names for full moons south of the equator.

January: Hay Moon, Buck Moon, Thunder Moon, Mead Moon
February (mid-summer): Grain Moon, Sturgeon Moon, Red Moon, Wyrt Moon, Corn Moon, Dog Moon, Barley Moon
March: Harvest Moon, Corn Moon
April: Harvest Moon, Hunter’s Moon, Blood Moon
May: Hunter’s Moon, Beaver Moon, Frost Moon
June: Oak Moon, Cold Moon, Long Night’s Moon
July: Wolf Moon, Old Moon, Ice Moon
August: Snow Moon, Storm Moon, Hunger Moon, Wolf Moon
September: Worm Moon, Lenten Moon, Crow Moon, Sugar Moon, Chaste Moon, Sap Moon
October: Egg Moon, Fish Moon, Seed Moon, Pink Moon, Waking Moon November: Corn Moon, Milk Moon, Flower Moon, Hare Moon December: Strawberry Moon, Honey Moon, Rose Moon


Zodiac Moon Calendar 2017 photo: Astrocal


Just a phase

Here's how a full moon works:

The moon is a sphere that travels once around Earth every 27.3 days. It also takes about 27 days for the moon to rotate on its axis. So, the moon always shows us the same face; there is no single "dark side" of the moon. As the moon revolves around Earth, it is illuminated from varying angles by the sun — what we see when we look at the moon is reflected sunlight. On average, the moon rises about 50 minutes later each day, which means sometimes it rises during daylight and other times during nighttime hours.

Here’s how the moon's phases go:

At new moon, the moon is between Earth and the sun, so that the side of the moon facing toward us receives no direct sunlight, and is lit only by dim sunlight reflected from Earth.

A few days later, as the moon moves around Earth, the side we can see gradually becomes more illuminated by direct sunlight. This thin sliver is called the waxing crescent.

A week after new moon, the moon is 90 degrees away from the sun in the sky and is half-illuminated from our point of view, what we call first quarter because it is about a quarter of the way around Earth.

A few days later, the area of illumination continues to increase. More than half of the moon's face appears to be getting sunlight. This phase is called a waxing gibbous moon.

When the moon has moved 180 degrees from its new moon position, the sun, Earth and the moon form a line. The moon’s disk is as close as it can be to being fully illuminated by the sun, so this is called full moon.

Next, the moon moves until more than half of its face appears to be getting sunlight, but the amount is decreasing. This is the waning gibbous phase.

Days later, the moon has moved another quarter of the way around Earth, to the third quarter position. The sun's light is now shining on the other half of the visible face of the moon.

Next, the moon moves into the waning crescent phase as less than half of its face appears to be getting sunlight, and the amount is decreasing.

Finally, the moon moves back to its new moon starting position. Because the moon’s orbit is not exactly in the same plane as Earth’s orbit around the sun, they rarely are perfectly aligned. Usually the moon passes above or below the sun from our vantage point, but occasionally it passes right in front of the sun, and we get an eclipse of the sun.

Each full moon is calculated to occur at an exact moment, which may or may not be near the time the moon rises where you are. So when a full moon rises, it’s typically doing so some hours before or after the actual time when it’s technically full, but a casual skywatcher won’t notice the difference. In fact, the moon will often look roughly the same on two consecutive nights surrounding the full moon.



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The above post is reprinted from materials provided by Space. Note: Materials may be edited for content and length.