Visit Arches National Park in Utah at night, and enjoy stunning views of the starry night. Pictured here, a hiker takes in the gorgeous views of the Milky Way underneath the Delicate Arch. For more breathtaking photos of the Milky Way, check out our stellerstories at http://on.doi.gov/1FOTNsC

Photo by Jacob W. Frank (www.sharetheexperience.org).

How to Tell The Signs Like You

Aries: Lots of hugs.  They will often challenge you, whether this is challenging your beliefs or trying to prove their worth by winning a game.  They get jealous easily and may come off as harsh when they see you flirting with or giving attention to someone else.  They will think about you more than they like to admit.  They will want to be updated with what’s going on in your life, and will actually show interest in your routines/interactions with others.  There is a good chance these guys will just tell you how they feel.

Taurus: They’ll ask for your opinions on things and will try to hold stimulating conversations with you. All of your quirks and bad habits will become cute to them.  They will look at you like you are this special human being who must be protected at all costs.  Sometimes they’ll make fun of you, but all good natured.  You will consume their thoughts.  They will compliment you on things they admire about you in an almost-manipulative way of letting you know who they want you to be. All earth signs are somewhat manipulative.  Taurus’ are just so sweet when they like someone, please don’t hurt them, they constantly fear that once they open up, they’ll be misunderstood or rejected, so don’t be discouraged by a more reserved presence. This is why they want to know so much about you.

Gemini: Witty and talkative.  You may think they are always this way, but if they like you, you’ll see it in their eyes.  They can be absolutely weird when talking to their crush.  They let their guard down.  They’ll try to treat you like just another friends if they don’t want to be too obvious about it, but still they’ll pay more attention to what you have to say.  They can be touchy, similar to Leos, but more spontaneous.  Be careful with Geminis, they look at love as an experience/adventure; they are most likely to lead someone on for the thrill of it.  They’ll also be really supportive and encourage you to go after what you want.  They want the best for you.

Cancer: Shy and so sweet.  All of their friends are 100% aware that they like you.  You can probably know more about how a cancer feels about you by observing how their friends act around you.  They are not exactly coy, but more cautious.  Lots of soft eyes and smiles.  They won’t hesitate to ask if you’re okay or how you’re doing, unless they doubt themselves.  If you see them looking at you, they are trying to figure out what to say to you or a way to subtly interact with you. They fear rejection, so they are probably least likely to make the first move.

Leo: They’ll probably flat out tell you that they like you.  Everyone within earshot will know it. They get really touchy feely and will play games with you.  Footsies under the table.  They will say some things and you’ll be like what the fuck are you talking about, but forgive them, it’s their way of being nervous, even if they don’t know it.  They’ll want to be around you. They will make more eye contact than they typically would with other people.  If they really like you, they’ll adopt this special “voice” which they will only talk to you in.  It’s often softer, sweeter, and really irresistible.  They can be SO protective (it’s adorable)!! They also try to impress you and it may come off as arrogant, but it’s actually so cute ‘cause they just want you to see how great they are.

Virgo:  They will challenge you, but not in the same way that Aries does.  Virgos tend to display their more negative qualities (sometimes on accident) to see if you are worth their time.  They tend to be very insecure, so they need to know that you will stand by them at their worst.  They will certainly pick out your flaws if they like you and may be harder on you because they want you to be the best you that you can be.  They may tag along with your friend group to be around you.  They often misinterpret feelings so they may share the “hot and cold” nature that Capricorns have because they are paranoid.  They’ll open up to you just a bit more than they would with others.  They want to make sure you stimulate them intellectually before they get too serious, this is important to them.

Libra: This is a toughy because Libras are generally very charming and likable people.  A good way to determine whether they like you is by asking around- if a Libra likes you, they will never say no when asked by others if they like you (unless they have good reason).  They will try to be around you frequently and will try to show you their best side.  They will treat you differently than other people if they like you, so watch out for any soft voices or loving eyes that they save for only a special someone.  

Scorpio: If they give you any special attention at all, this is a good sign.  Scorpios are typically indifferent to people who do not interest/benefit them in the slightest.  Scorpios are known for their impulsive wit and charm, but can be a bit more awkward (in a cute way) and less witty around their crush.  EYES EYES EYES. Expect intense eye contact and lots of “subtle” staring from a smitten Scorpio.  They are very protective, sometimes even possessive over their crush.  Their eyes will light up with curiosity or lust at the mention of you.

Sagittarius: They try extra hard to make you laugh.  They can be very childish and just want you to see the adventure in everything.  They will try to impress you with their random acquired skills, which can range from being able to identify every bird in sight to the capability of balancing a pencil on their nose for several minutes.  Sometimes they stutter or are more shy around the person they like, which is a telltale because Sags are nearly always outgoing or at least projective of what’s going on with them.  They will compliment you a lot.  They will try to be what they think you want<—-Capricorns do this too, but they merely deduce your personality and accentuate the features they think you’ll appreciate. While Sags think they are doing what Capricorns do so well, they really need to find someone who will accept them for who they are.

Capricorn: They will be very hot and cold.  One day, they can be outrageous and flirty and coy, but you can bet your life that they will go home and overthink it and the next day they will give their utmost effort to avoid you or seem indifferent towards you.  This is because Capricorns have a superiority complex, and sometimes a crush makes them feel weak; they are afraid of getting hurt so they will never act too smitten for too long.  This is why most Capricorns will not admit to their feelings until they are secure in the fact that you feel the same way.  A Capricorn will also try to help you and give you advice, not because they think you are wrong or in need of actual help, but because they care about your well being and want you to live the best life you can.  They will try to impress you with their unique talents or philosophies.  They can be very coy and charming.  Intense eye contact (they honestly believe they can seduce you with their eyes).  They are chivalrous regardless of gender; they love holding doors for their crush (like literally all of them do this).  Side note: they will never forget a single thing you say or do.  Ever.

Aquarius: They will want to hang around you.  They tend to be more reserved emotionally, but will mess around with you to cope.  Like gemini, they will encourage you to go after what they think is best for you.  If you are currently interested in someone else, a crushing Aquarius will not be too fond of said person and try to convince you that you “deserve better.” They will not let conversations die.  Aquarians don’t have the greatest attention span so they definitely admire you in some way if they hold convos with you, especially over text.  Lots of laughter too!! Lots of staring, they probably won’t even look away when you make eye contact with them.  Actually, they may just laugh out loud. They are often more courteous of you than they are with others.

Pisces: Think coy and giggly. They are the ultimate dreamers and will utterly want to share these dreams and desires with you.  They can be pretty awkward, but it’s cute.  They’ll try to look their best around you.  They get a bit shy, but are almost always in a flirty mood.  Lots of poking and material stealing and cute doodles.  They are the epitome of a “middle school crush” if you get what I mean.  The boys tend to be this way more than the girls because sometimes the girls consider it childish.  Sometimes.  They are most likely to stalk you on social media.  Pisces flirt immensely through technology, and are great at sending cute texts or messages.  This is often because they stutter or withdraw in real life.  If they are single and ready to mingle, you’ll know, with frequent sighs and several exclamations of “no one likes me” followed by insecure laughter.  Basically, they’re cute.

credit to astrostarss for the post! :)

NGC 2146

A galaxy being stretched out of shape has been imaged by the NASA/ESA Hubble Space Telescope. Known as NGC 2146, it has been severely warped and deformed so that an immense dusty arm of glittering material now lies directly in front of the centre of the galaxy, as seen in the image.

NGC 2146 is classified as a barred spiral due to its shape, but the most distinctive feature is the dusty spiral arm that has looped in front of the galaxy’s core as seen from our perspective. The forces required to pull this structure out of its natural shape and twist it up to 45 degrees are colossal. The most likely explanation is that a neighbouring galaxy is gravitationally perturbing it and distorting the orbits of many of NGC 2146’s stars. It is probable that we are currently witnessing the end stages of a process which has been occurring for tens of millions of years.

Credit: ESA/Hubble & NASA

Go home, Triton, you’re drunk

Neptune has 13 moons, and the largest of them, Triton, has a rather unusual feature. It has a retrograde orbit – it orbits Neptune in the opposite direction to the planet’s spin, and it is the only large moon in our solar system to do so. It takes speedy 5.87 earth days for this rebel moon to complete an orbit around Neptune.

In addition to being the odd one out in terms of its orbit, Triton also has a surprising composition. Underneath its frozen nitrogen crust lies an icy mantle, which houses a core made of rock and metal. Triton’s density of 2.050 g per cubic cm (one of the most dense of the outer solar system satellites) suggests that is has a higher rock content than the other icy moons that orbit Saturn and Uranus. Overall, Triton’s composition is remarkably similar to that of dwarf planet and Kuiper Belt object, Pluto.

Triton’s unusual orbit, coupled with its unexpected composition, suggests that Triton was originally part of the Kuiper Belt. Instead of being formed at the same time as Neptune, Triton was instead captured by Neptune’s gravity and coaxed into orbit.

This geologically active moon, which spews out nitrogen gas, has an orbital eccentricity of almost zero; it is nearly a perfect circle. Tidal forces, caused by interactions between the two bodies’ gravitational fields, cause Triton’s orbit to decay. Currently, Triton orbits at a distance of 354,759 km from Neptune; this is closer than our moon orbits the Earth. In an estimated 3.6 billion years, it is thought that the moon may pass the Roche limit (the limit by which the moon’s gravity can no longer withstand the pull of Neptune and thus disintegrates) and be torn apart, creating a ring system similar to that of Saturn.

From the odd way it orbits Neptune, to vomiting nitrogen and eventually meeting a violent demise, Triton should definitely call it a night.

-LC
More info
Image source

“Colors” of the Sun

The human eye can only see a very small fraction of the electromagnetic spectrum, less than a billionth of a billionth of the whole thing. Considering the amazing things we can see with our own eyes, what wonders are we missing out on with the rest of it? Fortunately we have developed instruments that can detect much of the rest of it and software that can turn this data intopictures that our eyes can interpret.

The image below represents eleven slices of the electromagnetic spectrum (and two other forms of detection in greyscale), only two of which are normally visible to the human eye. All of these images were taken of the same event and yet look very different. This demonstrates how you can observe many different things from a variety of wavelengths.

Six of the images are depicting the emission spectra of eight different iron ions at various temperatures ranging from 600,000K – 20,000,000K (1,000,000 – 36,000,000°F). These highlight varying parts of the sun’s corona and flares, giving indications as to the local magnetic field lines of the sun. One of them is looking at a piece of helium’s emission spectrum at 50,000K (90,000°F) and tells us about the sun’s chromosphere (upper atmosphere). Another looks at 160nm, belonging to carbon at 10,000K (17,000°F), giving hints about the uppermost portion of the sun’s photosphere (lower atmosphere).

Three of the other images show portions of the spectrum given off by the sun’s black body radiation. Each of them reveals details of the sun’s photosphere (surface) and indicates temperature differentials. One of them is in the ultraviolet, 170nm, another in the visible range, 450nm (blue/purple), and the last is a broad sweep of the visible spectrum, what it would look like to the human eye.

This image only covers pieces from 9.4nm to about 7000nm: low energy x-rays, ultraviolet, and visible light; it doesn’t incorporate gamma rays, high energy x-rays, infrared, microwave, or radio waves, each of which can yield its own fascinating discoveries. Imagine what more there is for us to see and learn by looking at the universe with “wider” eyes!

-LUX

In the next few days I’ll be covering some of these topics in more detail such as the composition and range of temperatures of the sun, how these things produce different wavelengths of light, what the two greyscaled images are, and what different wavelengths reveal about the rest of our universe.

Image Credit
Further Information:
Sun Primer
NASA’s Solar Dynamics Observatory
Black Body Radiation
Emission Spectra
Composition of the Sun
Iron in the Sun