Simulation of a particle collision in which a Higgs boson is produced. (Credit: Lucas Taylor/CMS)

“The dark matter seems to ‘know’ how the visible matter is distributed. They seem to conspire with each other such that the gravity of the visible matter at the characteristic radius of the dark halo is always the same,” said Dr. Benoit Famaey (Universities of Bonn and Strasbourg).

A zoomed-in image of Earth from the perspective of NASA’s Lunar Crater Observation and Sensing Satellite (LCROSS). The small dot below it is the moon. Credit: NASA Ames

This chart illustrates how infrared is used to more accurately determine an asteroid’s size. (Credit: NASA/JPL-Caltech)