Only A Little Lost • Posts Tagged ‘science!’

This Is the Most Detailed Image of the Universe Ever Captured
NASA has just published the most detailed view of the Universe ever taken. It’s called the Extreme Deep Field—or XDF for short. It took ten years of Hubble Space Telescope photographs to make it and it shows some the oldest galaxies ever observed by humans, going 13.2 billion years back in time.
It’s a mindblowing, extremely humbling view. Not only for what it shows, but for what it doesn’t show. While this image contains about 5,500 galaxies, it only displays a tiny part of the sky, a ridiculously small slice of the Universe.

This Is the Most Detailed Image of the Universe Ever Captured

NASA has just published the most detailed view of the Universe ever taken. It’s called the Extreme Deep Field—or XDF for short. It took ten years of Hubble Space Telescope photographs to make it and it shows some the oldest galaxies ever observed by humans, going 13.2 billion years back in time.

It’s a mindblowing, extremely humbling view. Not only for what it shows, but for what it doesn’t show. While this image contains about 5,500 galaxies, it only displays a tiny part of the sky, a ridiculously small slice of the Universe.

the-science-llama:

Earth Airglow and Orion

scienceisbeauty:

Here Albert Einstein gave birth the four papers known as the Annus Mirabilis papers:

On a Heuristic Point of View about the Creation and Conversion of Light (Photoelectric effect, Nobel Prize in Physics 1921)

Investigations on the theory of Brownian Movement

On the Electrodynamics of Moving Bodies (Special relativity)

Does the Inertia of a Body Depend Upon Its Energy Content? (in which is deduced the famous Mass–energy equivalence equation E = mc2.)

Not bad huh?

By Dsmntl (Own work) [CC-BY-SA-3.0 or GFDL], via Wikimedia Commons

(Source: reykjavikboulevard)

the-absolute-best-posts:

unicorn-meat-is-too-mainstream:

strange clouds

Various cloud formations might be one of the most beautiful and romantic sights in nature, but these masses of liquid droplets is also a complex and scientifically interesting phenomena.

HAARP [x][x]

mucholderthen:

Star sizes
by *MartinSilvertant

This is a design to showcase the biggest star (VY Canis Majoris) and compare it with increasingly smaller but also increasingly familiar bodies.

The color given to each body is its average color, and in case of the stars reflects how hot it is. Stars that emit blue or even ultraviolet light are the hottest, while stars that emit red light are significantly cooler.

Below each name of the star you will find how many solar radii big they are (1 solar radius is the size of the Sun). In case of the planets, it shows how many Earth radii each body is.

VY Canis Majoris is 1,800 to 2,100 solar radii big, which means that 5,832,000,000 to 9,621,000,000 Suns will fit into VY Canis Majoris.

Our sun is the only star close enough to make proper photographs of, so all other photos were unusable in this presentation. Artists’ impressions aren’t always equally accurate. For example, the Sun looks red in all photo’s, yet it’s classified as a yellow dwarf, and it emits yellow to greenish light.

That’s why I chose to make an abstract representation of each body, because in this presentation only size and color matters; not what the body actually looks like. Browse the web if you want to find out what they look like.

a-utumnrain:

jirnrny:

coochqueen:

bluntess:

airpunchingacademic:

methcastle:

Go ahead and think we’re the only intelligent life out there. You go right ahead.

Fuck yeah Science

CHILLS i’ll always reblog this someone should add in the tardis somewhere

holy fuck

if you don’t think this is the coolest shit ever get the fuck out of my face right now

Jesus Christ, space.

wolframalpha:

The Spirit Mars rover was launched 10 years ago today.

It performed all its functions using less power than a hand blender.

anndruyan:

The summit of Mauna Kea on the Island of Hawaii hosts the world’s largest astronomical observatory, with telescopes operated by astronomers from eleven countries.

The combined light-gathering power of the telescopes on Mauna Kea is fifteen times greater than that of the Palomar telescope in California — for many years the world’s largest — and sixty times greater than that of the Hubble Space Telescope.

There are currently thirteen working telescopes near the summit of Mauna Kea. Nine of them are for optical and infrared astronomy, three of them are for submillimeter wavelength astronomy and one is for radio astronomy.

They include the largest optical/infrared telescopes in the world (the Keck telescopes), the largestdedicated infrared telescope (UKIRT) and the largest submillimeter telescope in the world (the JCMT). The westernmost antenna of the Very Long Baseline Array (VLBA) is situated at a lower altitude two miles from the summit.

thedemon-hauntedworld:

Distant Horizons – Different Surfaces

pezzington:

fithome:

imgonnariverdance:

shadowkat104:

kellyjacobsbooks:

HOW TO SURVIVE A HEART ATTACK WHEN ALONE

Let’s say it’s 6.15pm and you’re going home (alone of course), after an unusually hard day on the job. You’re really tired, upset and frustrated. Suddenly you start experiencing severe pain in your chest that starts to drag out into your arm and up into your jaw. You are only about five miles from the hospital nearest your home. Unfortunately you don’t know if you’ll be able to make it that far. You have been trained in CPR, but the guy that taught the course did not tell you how to perform it on yourself..!!

NOW HOW TO SURVIVE A HEART ATTACK WHEN ALONE…

Since many people are alone when they suffer a heart attack, without help, the person whose heart is beating improperly and who begins to feel faint, has only about 10 seconds left before losing consciousness.

However, these victims can help themselves by coughing repeatedly and very vigorously.

A deep breath should be taken before each cough, and the cough must be deep and prolonged, as when producing sputum from deep inside the chest.

A breath and a cough must be repeated about every two seconds without let-up until help arrives, or until the heart is felt to be beating normally again.

Deep breaths get oxygen into the lungs and coughing movements squeeze the heart and keep the blood circulating.

The squeezing pressure on the heart also helps it regain normal rhythm. In this way, heart attack victims can perhaps buy precious time to get themselves to a phone and dial 911.

Rather than sharing another joke please contribute by broadcasting this which can save a person’s life!

Be prepared and become part of the solution. Get your free next-of-kin notification card today. Click here: https://www.InCaseOfEmergencyCard.com/

major signal boost

Reblogging cause this could save someone’s life

This could save many lives, reblog

http://www.heart.org/HEARTORG/Conditions/More/CardiacArrest/Cough-CPR_UCM_432380_Article.jsp

likeaphysicist:

scinerds:

kenobi-wan-obi:

Cosmic Dance: Creation of Supermassive Black Holes

Evolution of two equal sized galaxies colliding and forming a massive cloud of gas that will collapse into black hole.

Credit: Ohio State University

kenobi-wan-obi:

NGC 602

A young, bright open cluster of stars located in the Small Magellanic Cloud (SMC), a satellite galaxy to the Milky Way.

Image Processing by Steven Marx

Radiation and shock waves from the stars have pushed away much of the lighter surrounding gas and dust that compose the nebula known as N90, and this in turn has triggered new star formation in the ridges (or “elephant trunks”) of the nebula. [**]

FITS data obtained from Hubble Legacy Archive (HLA)

imagineatoms:

New observations of a ‘dust trap’ around a young star solve long-standing planet formation mystery

Astronomers using the new Atacama Large Millimeter/submillimeter Array have imaged a region around a young star where dust particles can grow by clumping together. This is the first time that such a dust trap has been clearly observed and modeled. It solves a long-standing mystery about how dust particles in discs grow to larger sizes so that they can eventually form comets, planets and other rocky bodies.

Astronomers now know that planets around other stars are plentiful. But they do not fully understand how they form and there are many aspects of the formation of comets, planets and other rocky bodies that remain a mystery. However, new observations exploiting the power of ALMA are now answering one of the biggest questions: how do tiny grains of dust in the disc around a young star grow bigger and bigger—to eventually become rubble, and even boulders well beyond a metre in size?

Computer models suggest that dust grains grow when they collide and stick together. However, when these bigger grains collide again at high speed they are often smashed to pieces and sent back to square one. Even when this does not happen, the models show that the larger grains would quickly move inwards because of friction between the dust and gas and fall onto their parent star, leaving no chance that they could grow even further.

Somehow the dust needs a safe haven where the particles can continue growing until they are big enough to survive on their own. Such “dust traps” have been proposed, but there was no observational proof of their existence up to now.

Bottom left image: Artist’s impression of the proposed disk structure of Oph IRS 48. The brown spots represent the large and small grains. The larger grains detected by ALMA are concentrated in the dust trap at the bottom of the image. The blue represents the distribution of carbon monoxide gas. The gap in the disk is shown with the proposed planetary body that is sweeping the area clear and providing the conditions necessary to form the dust trap. Credit: Nienke van der Marel

Nienke van der Marel, a PhD student at Leiden Observatory in the Netherlands, and lead author of the article, was using ALMA along with her co-workers, to study the disc in a system called Oph-IRS 48. They found that the star was circled by a ring of gas with a central hole that was probably created by an unseen planet or companion star. Earlier observations using ESO’s Very Large Telescope had already shown that the small dust particles also formed a similar ring structure. But the new ALMA view of where the larger millimetre-sized dust particles were found was very different!

“At first the shape of the dust in the image came as a complete surprise to us,” says van der Marel. “Instead of the ring we had expected to see, we found a very clear cashew-nut shape! We had to convince ourselves that this feature was real, but the strong signal and sharpness of the ALMA observations left no doubt about the structure. Then we realised what we had found.”

What had been discovered was a region where bigger dust grains were trapped and could grow much larger by colliding and sticking together. This was a dust trap—just what the theorists were looking for.

Bottom right image: ALMA image of the dust trap around Oph IRS 48. The distinctive crescent-shaped feature comes from the accumulation of larger dust grains in the outer regions of the disk. This provides the safe haven dust grains need to grow into larger and larger objects. Credit: ALMA (ESO/NAOJ/NRAO) / Nienke van der Marel

As van der Marel explains: “It’s likely that we are looking at a kind of comet factory as the conditions are right for the particles to grow from millimetre to comet size. The dust is not likely to form full-sized planets at this distance from the star. But in the near future ALMA will be able to observe dust traps closer to their parent stars, where the same mechanisms are at work. Such dust traps really would be the cradles for new-born planets.”

The dust trap forms as bigger dust particles move in the direction of regions of higher pressure. Computer modelling has shown that such a high pressure region can originate from the motions of the gas at the edge of a gas hole—just like the one found in this disc.

“The combination of modelling work and high quality observations of ALMA makes this a unique project”, says Cornelis Dullemond from the Institute for Theoretical Astrophysics in Heidelberg, Germany, who is an expert on dust evolution and disc modelling, and a member of the team. “Around the time that these observations were obtained, we were working on models predicting exactly these kinds of structures: a very lucky coincidence.”

The observations were made while the ALMA array was still being constructed. They made use of the ALMA Band 9 receivers—European-made devices that allow ALMA to create its so far sharpest images.

“These observations show that ALMA is capable of delivering transformational science, even with less than half of the full array in use,” says Ewine van Dishoeck of the Leiden Observatory, who has been a major contributor to the ALMA project for more than 20 years. “The incredible jump in both sensitivity and image sharpness in Band 9 gives us the opportunity to study basic aspects of planet formation in ways that were simply not possible before.”

magicalnaturetour:

Waitomo Glowworm Caves are a famous tourist attraction because of the large population of fireflies that live in caves. Fireflies, or Arachnocampa luminosa - tiny bioluminescent creatures that produce blue and green light live exclusively in New Zealand.

Source

Camera Kodak C340 Zoom Digital Camera
ISO 80	Aperture f/2.7
Exposure 1/90th	Focal Length 5mm