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A composite image of the Bullet Cluster, formed after the collision of two large clusters of galaxies. Most of the matter in the clusters (blue) is clearly separate from the normal matter (pink), giving evidence that nearly all of the matter in the clusters is dark. | Photo Credit: NASA/CXC/CfA/M. Markevitch The general theory of…
Read More “Indirect evidence builds, yet the ‘dark’ universe remains murky” »
Supernova remnant SNR 0454-67.2 is likely the result of a Type Ia supernova explosion. In the late 1990s, scientists studied the light from such supernovae to find that the universe’s expansion is accelerating. | Photo Credit: ESA/Hubble, NASA Can you get rid of all the energy in the room in which you are reading this?…
Read More “The cosmological constant problem is one of the biggest crises in physics” »
Say you have a friend who asserts that they can smell water. You are sceptical, yet also curious. To test their claim, you fill up 50 cups out of 100 with water and instruct your blindfolded friend to sniff away. If your scepticism – the null hypothesis – is justified, the odds of your friend…
