Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

Since the retirement of the Shuttle, visiting the telescope has proven essentially impossible. According to a 2019 study, the ...

The Hubble Space Telescope has been orbiting Earth for over 35 years now. Billions of miles away, floating above our heads, it has completely changed .

For years, cosmologists have argued over a simple question with an awkward answer: How fast is the universe expanding right ...

We have known for several decades that the universe is expanding. Scientists use multiple techniques to measure the present-day expansion rate of the universe, known as the Hubble constant. These ...

Hubble Space Telescope imagery created an HD look at the gas giant planet Jupiter. Credit: NASA Goddard Space Flight Center ...

Orbit decay accelerates as solar activity rises, with no approved mission yet to raise the telescope's altitude A newly released plot of the Hubble Space Telescope's altitude shows just how quickly ...

For decades, astronomers have known that the universe is expanding. To determine how fast it is growing today, scientists calculate a value called the ...

Astrophysicists propose a new “stochastic siren” method using the gravitational-wave background from black hole mergers to ...

The Hubble Space Telescope's evidence of an "intermediate-sized" black hole about 6000 light-years away in the closest ...

Astronomers used AI to search 35 years of Hubble data and discovered over 1,300 rare cosmic anomalies hidden in plain sight.