Astronomers' simulations support dark matter theory

Computer simulations by astronomers support the idea that dark matter—matter that no one has yet directly detected but which many physicists think must be there to explain several aspects of the observable universe—exists, ...

Simulation makes the grade for teacher screening

New research has found that simulations are an effective on-entry screening tool for teaching candidates, exposing university students to authentic classroom dynamics, increasing their confidence, and providing a safe learning ...

NASA's Hubble pauses science due to gyro issue

NASA is working to resume science operations of the agency's Hubble Space Telescope after it entered safe mode April 23 due to an ongoing gyroscope (gyro) issue. Hubble's instruments are stable, and the telescope is in good ...

Study uses thermodynamics to describe expansion of the universe

The idea that the universe is expanding dates from almost a century ago. It was first put forward by Belgian cosmologist Georges Lemaître (1894–1966) in 1927 and confirmed observationally by American astronomer Edwin Hubble ...

The universe's accelerated expansion might be slowing down

The universe is still expanding at an accelerating rate, but it may have slowed down recently compared to a few billion years ago, early results from the most precise measurement of its evolution yet suggested Thursday.

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