Wicked is Coming.
It is an unusual school in an unusual location and is run by an unusual teacher.
Rajesh Kumar is a shopkeeper by profession but spends hours every morning teaching around 80 children from the poorest of the poor in India’s capital.
The 43-year-old visited the construction of the Delhi transit station a few years ago and was disturbed by the sight of many children playing at the site instead of attending school.
When he questioned the parents working at the sites they all said there were no schools in the vicinity and no one cared.
Consequently, his open-air class room was born - between pillars and beneath the tracks of the Delhi transit system, known as the Metro.
Every few minutes a train passes above, the children unperturbed by its sounds.
There are no chairs or tables and the children sit on rolls of polystyrene foam placed on the rubble.
Three rectangular patches of wall are painted black and used as a blackboard.
Anonymous donors have contributed cardigans, books, shoes and stationery for the children, as their parents cannot afford them.
One unnamed individual sends a bag full of biscuits and fruit juice for the pupils every day - another incentive for the children to turn up for their studies.
Mutants. Since the discovery of their existence they have been regarded with fear, suspicion, often hatred. Across the planet, debate rages. Are mutants the next link in the evolutionary chain or simply a new species of humanity fighting for their share of the world? Either way it is a historical fact: Sharing the world has never been humanity’s defining attribute.
Rocket, Meteor, and Milky Way over Thailand
Image Credit & Copyright: Matipon Tangmatitham
Explanation: Can the night sky appear both serene and surreal? Perhaps classifiable as serene in the above panoramic image taken last Friday are the faint lights of small towns glowing across a dark foreground landscape of Doi Inthanon National Park in Thailand, as well as the numerous stars glowing across a dark background starscape. Also visible are the planet Venus and a band of zodiacal light on the image left. Unusual events are also captured, however. First, the central band of our Milky Way Galaxy, while usually a common sight, appears here to hover surreally above the ground. Next, a fortuitous streak of a meteor was captured on the image right. Perhaps the most unusual component is the bright spot just to the left of the meteor. That spot is the plume of a rising Ariane 5 rocket, launched a few minutes before from Kourou, French Guiana. How lucky was the astrophotographer to capture the rocket launch in his image? Pretty lucky — the image was not timed to capture the rocket. Also lucky was how photogenic — and perhaps surreal — the rest of the sky turned out to be.
Cosmos: A Spacetime Odyssey [March 9th]
it doesn’t matter who we face. it doesn’t matter where we play. from the smallest pond to across the widest ocean. if it’s frozen, we’re at home. all ice is home ice.
Yes, and No. This is because we do not have the ability to directly observe black holes. We only know they exist because of their effects on things that we can observe. Also, An event horizon is the point at which there is no trajectory for light or matter to escape the pull of the black hole. The best we can do is to make models and simulations of these event horizons by calculating where they should be.
Here is a simulation of gravitational lensing with a black hole. (gravitational lensing occurs when light is bent by a gravity field in curved space-time) In this simulation the very edge of the dark spot, inside where the light is bending (it may even be almost a point), is the event horizon.
In reality it is impossible to see this dark spot. Here is an image of an actual black hole. As you can see the “black hole” part is not so visible. matter is moving around at such high speeds that it is heated up and gives off an enormous about of light. Sometimes (like in this real image) partials are shot out in an energetic stream.
Now the only reason we think this is a black hole is because of the effects it is having on the matter around it. There are even instances of gravitational lensing without black holes. Here is an example of gravitational lensing with clusters of galaxies. (black holes might be inside these galaxies but they are not the cause of gravitational lensing on this scale)
So, to answer your question: We cannot take direct images of black holes. All we can do is take images of the what it effects. So sorry, I won’t be posting any images of event horizons. But hey you learned something, Go Science!
The Sun, as of February 26, 2014.