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How the last star in the universe might save humanity

February 2, 2016 by Andrew Leave a Comment

Did you know our star will die?

The Kurzgesagt “In a Nutshell” video on red dwarfs is fascinating. We learn about a whole host of stars – brown dwarfs, blue dwarfs and even white and black dwarfs. I had no idea there were so many types of stars.

Until I watched this quick science lesson I hadn’t thought it would be possible to live with the assistance of the red dwarf. Sure, okay, there will be challenges but it’s good to know it’ll be possible as all of humanity may have to move one day.

In Pure Spirit

What fascinates you the most about the stars, space and the sky at night?

Will Comet ISON explode into the sun or break hearts?

May 22, 2013 by Andrew Leave a Comment

Every individual with an interest in astronomy must be already in the know concerning the much anticipated Comet ISON. Comet ISON was discovered in September 2012 by two Russian astronomers using an International Scientific Optical Network telescope.

McNaught-australia-public-domain-wiki1

In essence, comet ISON will come close to mars, at a distance of about 10.8 million kilometers after which it will move towards the sun and pass within a distance of 1.2 million kilometers and then approach earth thereafter. The comet will have a consistently accelerating speed which will get to 425,000 mph by the time it gets to the sun.

Comet ISON is expected to get brighter as it approaches the sun and extremely bright when it’s closest; at the time which its nucleus will melt and resultantly create a long tail composed of both gas and dust. The comet will be extremely bright, given that it will pass very close to the sun; only that no one is certain about how bright it will be. Nonetheless, it may just be one of the brightest comets ever seen in centuries.

The fact that the ISON comet was discovered while it was a at a very far distance means that it will be unlike other previous comets and when it gets to proximity of the sun, it will be very much visible to the naked human eye. The brightness and the distance are what essentially make this comet something to anticipate for, and NASA and scientists from all around the world are tracking its every movement.

Though no one knows exactly what will happen as the Comet passes near the sun, everyone has high expectations and maybe there will be a spectacular sight to behold come November 28th, or perhaps Comet ISON will just fizzle out and break the hearts of many sky watchers. The individuals in the northern hemisphere will be able to observe the comet in its fullness.

If the ISON comet passes within the Roche limit, it may disappoint millions since it is likely to disintegrate or break into pieces considering the fact that it is primarily held by its own gravitational force. It is possible that this comet will be destroyed due to the sun’s immense radiation; this in addition to its internal pressure and thermal stress may significantly add to its breaking apart. Nevertheless it may also survive due its size –the bigger size means that its interior may well be insulated from the gravity and energy of the sun.

In Pure Spirit

Have you heard anything about Comet ISON?

What have you heard? Comet ISON may hit the Earth? That the shock of Comet ISON smashing into the sun will create solar winds that will be felt on Earth? That Comet ISON may knock out satellites, GPS and communication?

There seems to be plenty of concern and worrying debate about what the Comet means but we really don’t know. Some, of course, see Comet ISON as an omen and talk about pagan rites, demons and magical things. It can be hard to tell whether those are real concerns or just gossip.

Please note: Image shows C/2006 P1 McNaught, taken on Jan 2007.

What is a leap year?

February 29, 2012 by Andrew Leave a Comment

Most people know that a leap year happens every 4 years and adds an extra day to February. That’s wrong. The leap year is a little more complex than that. It’s not a leap year if it’s also a century year. That is, well, there’s a complication to that as well…

This video explains what a leap year is and why we have them. Years are based on the Earth travelling around the Sun. However, the calculations don’t evenly fit into exact days – despite our best efforts. The leap year is part of the adjustment.

It’s all connected to the sun destroying the planet. Kinda.

In Pure Spirit

Are you doing anything special to mark this leap year?

What effects will the sun’s giant explosion have?

June 8, 2011 by Andrew 1 Comment

On June the 7th, 2011, there was a giant explosion on the sun. The firey blast wave reached from the bottom of the sun to more than half way around its surface. The blast is the largest since 2006 and peaked at 05:41 GMT.

The blast will lead to moderate geomagnetic storm activity by Wednesday (and this blogger is writing while the thunderstorm rages outside) and a surge in radiation. Scientists say, that the event may cause a collision of magnetic fields between the Sun and Earth. Bill Murtagh told the AFP;

“Part of our job here is to monitor and determine whether it is Earth-directed because essentially that material that is blasting out is gas with magnetic field combined,”

“In a day or so from now we are expecting some of that material to impact us here on Earth and create a geomagnetic storm,” he said.

“We don’t expect it to be any kind of a real severe one but it could be kind of a moderate level storm.”

In Pure Spirit

Have you noticed anything different since yesterday? Headaches or dizziness? Did you sense anything wrong?

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