Archive for the ‘Gravitational Waves’ Tag

A Busy Day for Space Fans   Leave a comment


Credits: Event Horizon Telescope collaboration et al.

So where does one begin on a day like today? I can’t honestly say what story could top seeing a photograph of an actual black hole. But the news certainly is fascinating. And check out the link. There’s a complete picture of Messier 87, a giant galaxy some 55 million light years away, located in Virgo.

Einstein theorized in a paper published in 1915 that star’s light rays curved around the sun during an eclipse. That meant the stars appeared about 1.75 second of arc away from their positions.

In May 29, 1919, when a six-minute total eclipse in Brazil caused British astronomer Arthur Eddington to determine that light rays from other stars bent when subjected to the gravitational field of our sun.  He proved this through the use of photographs, and others have proven it since.

Jump to 2016. MIT graduate student Katie Bouman created the algorithm that produced the first image of the black hole. Her contributions seem to be a bit underreported, but thanks to her work, we now see the image pictured above.

Falcon Heavy launching 400 x 600

Credit: Kennedy Space Center

The second big story (to me at least) is Falcon Heavy. It was supposed to launch today, but thanks to high winds aloft, we’re going to have to wait until tomorrow. But the cool thing about it is its three boosters, all expected to land perfectly. I’m always fascinated by this new generation of rockets. Elon Musk, for all his faults, is a genius. Not only did he create a better class of rockets, partly recyclable, he also made their capsules so sleekly modern.

And lastly, on April 11 NASA will host a teleconference on its study of its astronaut twins, Mark Kelly and Scott Kelly. This eagerly-awaited report will detail how Scott Kelly was affected by living in the ISS for 340 days, as compared to his twin brother, Mark Kelly, who remained on Earth. So far, these are the only twins who have both served on the ISS, and, as such, are uniquely qualified for this important study.


Einstein Was Right   Leave a comment

Gravitational Waves

To watch a fascinating video from the New York Times, click

It’s all over the internet: Einstein was right – there are such things as gravitational waves.

In a seemingly impossible experiment, a group of astrophysicists announced on Thursday, February 11, 2016 that they now had aural evidence of gravitational waves. An international mega-group of 1000 scientists published a report in Physical Review Letters confirming their findings.

For those of you who might be asking, “What are gravitational waves?”, here’s a quick definition. They’re ripples in spacetime created by any particle or object with mass. Einstein predicted them in his theory of relativity in 1916.

In a classic case of “if a tree falls in the woods, does it make a sound,” two black holes collided so impossibly far away – a billion light years – and only now is the Earth receiving the noise from that cataclysmic event.

Two antennas designed for receiving any sound a gravitational wave would generate, located in Washington State and Louisiana, and part of LIGO (Laser Interferometer Gravitational-Wave Observatory), picked up a brief chirp on September 14, 2015.

This event’s also a significant achievement for astronomy, where so much is dependent upon what can been seen. This experiment delivers another dimension from which to observe and measure the universe.

If you’d like to read more about this important confirmation of Einstein’s theory of relativity, here are a few sources:


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