Planets I Learned About Via Youtube While Procrastinating My English Essay

Technology then and now

😈 [http://bit.ly/2jn9ubb]

okay but what if angels are black holes and halos are just the light warping around them being pulled in by gravity 

A star created 1,800 years ago after the collision of two distant suns is set to appear in the night sky for the first time – as the light from the crash finally reaches the Earth. 

Scientists predict that for six months in 2022, stargazers will be able to witness the birth of the new star, by fixing their telescopes near the Pisces and Cygnus constellations. Dubbed the Boom Star, it has taken nearly two millennia for its light to reach earth — where it will be able to be seen by the naked eye. Astronomers expect the collision to increase the brightness of the pair ten thousand fold, making it one of the brightest stars in the heaven for a time. The explosion, known as a Red Nova, will then dissipate and the star will remain visible in our skies as a single bright, but duller, dot. 

Your not going to want to miss this appear in our sky as it’s a once in a lifetime event!          Source 

Saturn aurora, taken by Nasa Hubble.

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Andromeda Galaxy from Earth:

Cost per kg for human spaceflight

via reddit

The Shepard-Risset Glissando

A Shepard tone, named after Roger Shepard, is a sound consisting of a superposition of sine waves separated by octaves. When played with the base pitch of the tone moving upward or downward, it is referred to as the Shepard scale. This creates the auditory illusion of a tone that continually ascends or descends in pitch, yet which ultimately seems to get no higher or lower. It has been described as a “sonic barber’s pole”. 

Jean-Claude Risset subsequently created a version of the scale where the tones glide continuously, and it is appropriately called the continuous Risset scale or Shepard–Risset glissando. When done correctly, the tone appears to rise (or descend) continuously in pitch, yet return to its starting note. Basically, it’s a continuously descending tone that never gets any lower. It’s the acoustical version of M.C. Escher’s Penrose Stairs optical illusion. Source.

Doesn’t it sound a little bit creepy?

Newest LIGO Signal Raises A Huge Question: Do Merging Black Holes Emit Light?

“The second merger held no such hints of electromagnetic signals, but that was less surprising: the black holes were of significantly lower mass, so any signal arising from them would be expected to be correspondingly lower in magnitude. But the third merger was large in mass again, more comparable to the first than the second. While Fermi has made no announcement, and Integral again reports a non-detection, there are two pieces of evidence that suggest there may have been an electromagnetic counterpart after all. The AGILE satellite from the Italian Space Agency detected a weak, short-lived event that occurred just half a second before the LIGO merger, while X-ray, radio and optical observations combined to identify a strange afterglow less than 24 hours after the merger.”

Whenever there’s a catastrophic, cataclysmic event in space, there’s almost always a tremendous release of energy that accompanies it. A supernova emits light; a neutron star merger emits gamma rays; a quasar emits radio waves; merging black holes emit gravitational waves. But if there’s any sort of matter present outside the event horizons of these black holes, they have the potential to emit electromagnetic radiation, or light signals, too. Our best models and simulations don’t predict much, but sometimes the Universe surprises us! With the third LIGO merger, there were two independent teams that claimed an electromagnetic counterpart within 24 hours of the gravitational wave signal. One was an afterglow in gamma rays and the optical, occurring about 19 hours after-the-fact, while the other was an X-ray burst occurring just half a second before the merger.

Could either of these be connected to these merging black holes? Or are we just grasping at straws here? We need more, better data to know for sure, but here’s what we’ve got so far!