The Hubble Space Telescope, a cornerstone of modern astronomy, has been providing breathtaking images and invaluable data for ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

NASA’s Hubble Space Telescope captured a surprising asteroid trail while observing a distant spiral galaxy 102 million light-years away.

Origins -- Spaceship Hubble -- Hubble vision -- Planets -- Stars & nebulae -- Galaxies -- Black holes -- The dark cosmos -- Optical illusions -- Hubble's future ...

Einstein expressed support for Hubble’s observations that the universe was expanding—an idea the famed physicist had ...

For nearly a century, astronomers have been striving to measure the rate at which the Universe is expanding. Two main methods have been used: one based on observations of the cosmic microwave ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to calculate ...

The team explores one of the greatest discoveries of modern astronomy - that our universe is expanding - and the new ...

A discovery of binary stars could be the first step in building a more complete picture of how our galaxy formed, according ...

Evolving dark matter may explain cosmic acceleration. Observations support a mixed model. For years, a stubborn puzzle has sat at the center of the standard cosmological model. The evidence clearly ...