hubble’s panorama of the carina nebula, some 7500 light years away from earth, and about fifty light years in length here. stars old and new illuminate clouds of cosmic dust and gas, like the clumping hydrogen from which they were born.
the top star seen at the bisection of the first two panels, part of the eta carinae binary star system (most stars are in binary systems), is estimated to be more than a hundred times the mass of the sun - large enough to go supernoava in about a million years.
it also produces four million times as much light as the sun, and was once the second brightest star in the night sky. but surrounding dust and gas has dimmed our view of the star, though it’s still visible in the night sky to all but those in the most light polluted cities.
the fifth panel shows ‘the mystic mountain,’ where nascent stars in the dust cloud are spewing hot ionized gas and dust at 850,000 miles an hour. eventually, the ultraviolet radiation from these stars will blow away the dust, leaving visible the stars, like the cluster seen at the top of the panel, which were formed only half a million years ago.
Alexandros Maragos is an Athens based filmmaker and photographer best known for his landscape photography, astrophotography and timelapse imagery. In his own words:
The Milky Way is the name of the spiral galaxy in which our solar system is located. It is our home in space. The Earth orbits the Sun in the Solar System, and the Solar System is embedded within this vast galaxy of stars. In the northern hemisphere, the Milky Way is visible in the southern half of the sky. This makes Greece one of the best places in the world to see and photograph the galaxy because of the country’s geographic location in Southern Europe at the crossroads of Europe, Asia, and Africa.
As a filmmaker and photographer I feel very fortunate to live here. Every time I want to shoot the night sky, all I do is to pick a new spot on the map and just go there and take the shot. Greece is a heaven for astrophotography. Whether you choose a mountain, a beach, a peninsula or any of the 6,000 islands, the Milky Way is always visible in the southern sky.
To see more of his work visit his website or follow him on Facebook, Twitter, or Instagram.
Images and text via
AIR!
Earth’s atmosphere recently crossed 400 ppm CO2 for the first time in millions of years and probably will not go back below that amount during any of our lifetimes. (http://tinyurl.com/bus4xpt). But did you know there’s something else changing in the atmosphere to go along with that CO2 rise?
It’s pictured in this graph. This gas is going down, decreasing in the atmosphere as CO2 goes up. That gas? Oxygen. Oxygen in the atmosphere is decreasing.
Be honest…did you just stop and take a deep breath? It really is kinda creepy to realize that the gas everyone is taught as a kid they need to survive is going down in the atmosphere.
Anyway, why is oxygen going down? The same reason that carbon is going up; burning of fossil fuels.
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yknow black dwarfs,,, do they actually exist and do they actually live longer than the universe,,
Yes. When stars of a certain mass run out of fuel, they expel their outer layers ( a planetary nebula)
What’s left, in the center is a white dwarf. The core of the original star. Can you see it in the center of this planetary nebula? (NGC 7662)
That white dwarf glows only because of heat, it is not actually making any new light. So, that white dwarf will cool down and leave a dark chunk of mass behind
“Like its predecessor, the Viking 2 mission consisted of a lander and an orbiter designed to take high-resolution images, and study the Martian surface and atmosphere. Both the Viking 1 and 2 landers benefited greatly from their orbiting counterparts, which snapped images that helped mission controllers navigate the landers to safe landing sites.”
This particular image was taken by the Viking 2 Orbiter and shows a massive dust storm on the red planet. This spectacular storm can be seen on a global scale. The Viking 2 mission would end 3 years later on April 11, 1980.
Credit: NASA/JPL
One of the biggest mysteries in science is how you could get life in a place where it doesn’t already exist. Scientists have found some clues, though.
The latest is that Georgia Tech chemist Nicholas Hud was able to create something that looks a lot like RNA — a relative of DNA — using ingredients that would have been common on Earth when it was 4 billion years younger.
The study used two common chemicals left alone in what amounts to a mud puddle. The chemicals synced up and started forming that twisting ladder shape we think of when we picture DNA.
Scientists say this looks like a decent candidate for how simple organisms may have gotten started on Earth, and it wasn’t even all that hard.
Earlier studies have shown you can get some of the building blocks of life in the right situation, like extreme heat or lightning strikes. Some have even been found on asteroids.
The Georgia Tech study shows you don’t even need that much excitement. Swirling puddles could potentially have done the job.
By: Newsy Science.
Living with anxiety can be tough — your thoughts might race, you might dread tasks others find simple (like driving to work) and your worries might feel inescapable. But loving someone with anxiety can be hard too. You might feel powerless to help or overwhelmed by how your partner’s feelings affect your daily life.
If so, you’re not alone: Multiple studies have shown that anxiety disorders may contribute to marital dissatisfaction.
“We often find that our patients’ … partners are somehow intertwined in their anxiety,” says Sandy Capaldi, associate director at the Center for the Treatment and Study of Anxiety at the University of Pennsylvania.
Anxiety is experienced at many different levels and in different forms — from moderate to debilitating, from generalized anxiety to phobias — and its impacts can vary. But psychiatrists and therapists say there are ways to help your partner navigate challenges while you also take care of yourself.
Goodness look at the interplay between the light of the setting sun and the wave!!
This is a studyblr for everyone have some passion for science, especially astronomy and biology
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