For the calibration of relatively short distances the team observed Cepheid variables. These are pulsating stars which fade and brighten at rates that are proportional to their true brightness and ...
The most precise measurement yet of how fast the Universe is expanding shows we have a real and serious problem on our hands.
The cosmic distance ladder is the world’s longest ruler, built to measure the universe. Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the ...
A difference of a few kilometers per second might not sound like much. In cosmology, it has become one of the field’s most stubborn problems. An international team of astronomers has now delivered one ...
The universe is expanding; we’ve had evidence of that for about a century. But just how quickly celestial objects are receding from each other is still up for debate. It’s no small feat to measure the ...
See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. New findings into a cosmic puzzle suggest that scientists may have ...
A rare supernova appeared five times in the sky, giving scientists a new way to measure how fast the universe is expanding ...
Whenever you set out to solve a problem, there are a series of steps you have to take in order to arrive at the answer. Assuming your methods are sound and you don't make any major errors, the answer ...
On December 3, humanity suddenly had information at its fingertips that people have wanted for, well, forever: the precise distances to the stars. “You type in the name of a star or its position, and ...
Neutron stars, when they merge, should create an electromagnetic counterpart if they don't create a black hole right away, as light and particles will be expelled due to internal reactions in the ...
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