An curved arrow pointing right. The Hubble telescope's replacement – the James Webb space telescope – just had its final mirror installed. The new telescope has been in the works since 1996 ...

Yes, countless targeted lift-offs have come and gone in the past, but this one has a reality to it that the others didn't: the successor observatory to Hubble is now actually built. All that is ...

But although Webb is a successor to Hubble in some ways, with newer technology and the ability to see the universe in even greater detail, it isn’t a replacement. A pair of new images shows why ...

The Hubble Space Telescope 's $9.7 billion successor, the James Webb Space Telescope, has finally come together after a delays and cost overruns. The two halves of the next-generation space ...

The successor observatory to the mighty Hubble telescope has been built to see the very first stars to shine in the Universe. These very faint, very distant targets require a huge telescope design ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous -- and highly debated -- results had shown: The Universe is expanding faster than predicted by ...

But 100 years ago, astronomer Edwin P. Hubble (1889-1953), working at the Mount Wilson Observatory in California, made a stunning discovery: He calculated that a spiral nebula called Andromeda was ...

Despite its many achievements, Hubble is likely nearing the end of its life. The telescope is due for its last periodic servicing in May 2009. Its successor, the James Webb Space Telescope ...

NASA's Hubble Space Telescope has discovered a tidal disruption event 300 million light years away. The donut shaped remains of a star were found around a hungry black hole. Credit: NASA's Goddard Spa ...

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 ...