Negative mass could theoretically exists in our Universe

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Saoussen Mbarek and Manu Paranjape at the Université de Montréal in Canada have published a paper that details the conditions for negative mass to exist in our Universe without...

The taming of the screw

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I have a mathematician friend who believes that anything that it is mathematically possible exists somewhere in the multiverse. She believes that there are some features that are so beautiful, that it would be a crime if they were simply quirks of the Universal language.

Observation of Dirac Monopoles in a Synthetic Magnetic Field

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What are magnetic monopoles and why are they important? If you ever broke a magnet in two when you were little (I was a weird kid, leave me be) you...

The Universe’s composition is the same everywhere

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The Japanese X-ray satellite SUZAKU has looked at the distribution of gas around the Virgo cluster, a large galaxy cluster close to the Milky Way and the second brightest...

Lord of the Rings distance pinpointed

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As I mentioned in a previous post, there are a few ways to measure the distance of a star in our galaxy. Unfortunately when the Luminosity is unknown and it is too far away to use parallaxes method, we are stumped for ways to estimate the distance. Once in a while though we get lucky and we have events that allow us to calculate distance in other ways. Circinus X-1 is one of these events. Circinus X-1 is an x-ray binary; an x-ray binary is a system of two stars where material from one companion is accreting on the neutron star, which in turns emits x-rays.

Lunatic Hypotheses or How Quickly Theories Have To Adapt

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Last week, in a matter of a few days, two studies came out that brought with them a completely different perspective on our Moon. The first one, published in Nature...

Testing Relativity With Nothing

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There are two big problems with astrophysics, and they are called dark energy and dark matter. Dark energy is responsible for the accelerated expansion of the Universe. Dark matter keeps...

The Big Bang is not going anywhere.

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On the 4th of February a paper was published detailing a Universe that didn’t need a Big Bang. While it is very interesting (you can read it here) I find myself once again at odds with how theoretical papers are formulated. The paper details a mathematical robust way to solve many cosmological conundrums. The flatness problem (discussed in this vlog), the value of dark energy and the nature of dark matter.

The first measurement of an exoplanet day.

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Dutch Astronomers using ESO's Very Large Telescope were able to measure the rotational speed of a planet outside the Solar System for the first time. Ignas Snellen and his colleagues...

Are there cows on Mars?

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Obviously there are no cows on Mars but NASA’s Mars Curiosity Rover detected an increase of methane in the atmosphere and organic molecules from the soil during one of...