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...

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...

The Very Hungry Supermassive Black Hole

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We all get the munchies, but when you're a supermassive black hole (SMBH) your hunger might have dire consequences. And just like that an SMBH has outgrown its galaxy and jumped to the top of the heavyweight objects in the universe. About 12 billion light years from us, there is a galaxy called CID-947. It has a mass similar to our own Milky Way (about 1000 billion times the mass of the Sun) and it was only remarkable because it had an active galactic nucleus (AGN, i.e. an accreting SMBH).

Cracking the Moon

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The Oceanus Procellarum (Ocean of Storms) is the largest of the lunar maria (seas) covering roughly 4 million square kilometers (about the surface area of the EU). Its wide...

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.

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...

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...

New insight into the minor merger process

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Galaxy mergers are violent interactions between galaxies and they are consider one of the fundamental steps in how galaxies form and evolve. Mergers occur when two (or more) galaxies...

Interstellar Travel Meets The Real Universe

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Interstellar travel is about to go from a Sci-fi idea to physical reality, but the jump comes with a series of considerations that fiction writers don't have to consider. This...

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