* Advanced Technology Large-Aperture Space Telescope, the proposed successor for the Hubble Space Telescope

* 1990 – STS-31: The Hubble Space Telescope is launched from the Space Shuttle Discovery.

Shuttle mission STS-31 lifts off, carrying Hubble Space Telescope | Hubble into orbit.

Significant progress in Big Bang cosmology have been made since the late 1990s as a result of advances in telescope technology as well as the analysis of data from satellites such as COBE, the Hubble Space Telescope and WMAP.

* SPIKE, a scheduling system for earth or space based observatories and satellites, notably the Hubble Space Telescope.

NGC 4631 taken by the Hubble Space Telescope.

Several space observatories did the same, including the Hubble Space Telescope, the ROSAT X-ray observing satellite, and significantly the Galileo spacecraft, then on its way to a rendezvous with Jupiter scheduled for 1995.

* 1993 – Space Shuttle program: STS-61 – NASA launches the Space Shuttle Endeavour on a mission to repair the Hubble Space Telescope.

Hubble Space Telescope and MOST have also found or confirmed a few planets.

At a meeting of the Royal Astronomical Society in Britain, a team from University of Queensland described 40 unknown " dwarf " galaxies in this constellation ; follow-up observations with the Hubble Space Telescope and the European Southern Observatory's Very Large Telescope revealed that ultra compact dwarfs are much smaller than previously known dwarf galaxies, about across.

* 1997 – Space Shuttle Discovery is launched on a mission to service the Hubble Space Telescope.

Beginning in the 1990s, the Hubble Space Telescope yielded improved observations.

Reflection nebula IRAS 10082-5647 taken by Hubble Space Telescope.

Most known debris discs around other stars are fairly young, but the two images on the right, taken by the Hubble Space Telescope in January 2006, are old enough ( roughly 300 million years ) to have settled into stable configurations.

* 2005 – A second photo from the Hubble Space Telescope confirms that Pluto has two additional moons: Nix and Hydra.

This image spans about two light-years and was taken by the orbiting Hubble Space Telescope in 1999.

The final result will be a musical “ history of the universe ", from the Big Bang onwards through galaxy and star formation, up until modern times, including images from the Hubble Space Telescope and rhythms derived from the cosmic background radiation, supernovae, quasars, and many other astrophysical phenomena.

The companion star was resolved by the Hubble Space Telescope in 1995, when it was 70 astronomical units from the primary ; results were announced in 1997.

* 2001 – A hydrogen atmosphere is discovered on the extrasolar planet Osiris by the Hubble Space Telescope, the first atmosphere detected on an extrasolar planet.

Shortly before his death, Mount Palomar's giant reflector Hale Telescope was completed, and Hubble was the first astronomer to use it.

Bush, the launch of the Hubble Telescope, the savings and loan crisis, the election of Bill Clinton and the 1990s economic boom, the longest recorded expansion of GDP in the history of the United States.

The Hubble Space Telescope has a 2. 4 m ( 7 ft 10 in ) primary mirror. The correctly ground backup primary mirror built by Eastman Kodak for the Hubble space telescope ( the mirror was never coated with a reflective surface, hence its Honeycomb mirror | honeycomb support structure can be seen ).

Irr-II galaxies do not possess any structure that resembles a Hubble classification, and may have been disrupted.

Its companion Fomalhaut b was thought to be the first extrasolar planet ever detected by a visible light image, thanks to the Hubble Space Telescope, but infrared observations have since retracted this claim: it is instead a spherical cloud of dust.

With infrared telescopes and the Hubble Space Telescope, the " host galaxies " surrounding the quasars have been identified in some cases.

Astronaut crews have performed vital servicing tasks on Hubble through four servicing missions since December 1993 in order to extend operating life with the replacement of aging hardware and enhancing scientific capability through the installation of advanced science instruments.

While the LMC is often considered an irregular type galaxy ( the NASA Extragalactic Database lists the Hubble sequence type as Irr / SB ( s ) m ), the LMC contains a very prominent bar in its center, suggesting that it may have previously been a barred spiral galaxy.

In recent years, Hubble Space Telescope images have revealed many planetary nebulae to have extremely complex and varied morphologies.

The Hubble Space Telescope also showed that while many nebulae appear to have simple and regular structures from the ground, the very high optical resolution achievable by a telescope above the Earth's atmosphere reveals extremely complex morphologies.

Galaxies that do not fit into the Hubble sequence, because they have no regular structure ( either disk-like or ellipsoidal ), are termed irregular galaxies.

The Hipparcos satellite, the Hubble Space Telescope, and infrared color-magnitude diagram fitting have been used to establish a distance of ~ 153 ly ( 47 pc ) to the cluster center.

Evidence of just such an event horizon may have been detected in 1992 using ultraviolet ( UV ) observations with the High Speed Photometer on the Hubble Space Telescope.

Momentum wheels ( used in the Hubble Space Telescope ) are a different type of actuator, mainly used for gyroscopic stabilization of spacecraft: momentum wheels have high rotation speeds ( around 6000 rpm ) and mass.

Based on the success of earlier maintenance missions, NASA decided to have a fifth service mission to Hubble ; this was STS-125 flown on May 11, 2009.

These unresolved matters have resulted in cited values for the Hubble constant ( established from Classical Cepheids ) ranging between 60 km / s / Mpc and 80 km / s / Mpc.

Such jets, the nearest being in Messier 87, have been confirmed by the Hubble telescope as apparently superluminal, travelling at 6 × c ( six times the speed of light ) from our planetary frame.

For example, the original discovery that far galaxies appeared to have higher spectral redshifts than near galaxies ( an apparent violation of homogeneity ) led to the discovery of Hubble flow, the metric expansion of space that occurs equally in all locations ( restoring homogeneity ).

Recent observations with the Hubble Space Telescope have yielded the major discovery of protoplanetary disks within the Orion Nebula, which have been dubbed proplyds.

Sc and SBc galaxies, for instance, have very " loose " arms, whereas Sa and SBa galaxies have tightly wrapped arms ( with reference to the Hubble sequence ).

Hubble supported the Doppler shift interpretation of the observed redshift that had been proposed earlier by Vesto Slipher, and that led to the theory of the metric expansion of space.

A new theory has been proposed that Modifies inertia by assuming it is due to Unruh radiation subject to a Hubble scale Casimir effect ( MiHsC, or quantised inertia ).

Prior to Return to Flight, NASA Administrator Sean O ' Keefe declared that all future flights of the shuttle would go to the ISS, precluding the possibility of executing the final Hubble Space Telescope servicing mission which had been scheduled before the Columbia accident, despite the fact that millions of dollars worth of upgrade equipment for Hubble were ready and waiting in NASA warehouses.

However, soon after Einstein developed his static theory, observations by Edwin Hubble indicated that the universe appears to be expanding ; this was consistent with a cosmological solution to the original general-relativity equations that had been found by the mathematician Friedmann.

Since the early twentieth century when astronomer Edwin Hubble first hypothesized that redshift shows the universe is expanding, prevailing scientific opinion has been that the current state of the universe is the result of a process described by the Big Bang.

More recently, a large albedo feature, probably a crater, imaged by the Hubble Space Telescope on Ceres, has been informally named Piazzi.

Fortunately, the Hubble telescope had been designed to allow in-space maintenance, and in December 1993, mission STS-61 carried astronauts to the Hubble to make corrections and change some components.

Through the 1990s, the Hubble did provide astronony images that had never before been seen.

The OWL could be expected to regularly see astronomical objects with an apparent magnitude of 38 ; or 1, 500 times fainter than the faintest object which has been detected by the Hubble Space Telescope.

The absorption spectrum from this gas has been measured with the Hubble Space Telescope, allowing the properties of the stellar wind to be estimated.

Radio images of some individual sources in the field have been made with the European VLBI Network at 1. 6 GHz with a higher resolution than the Hubble maps.

Goddard's most famous project is the Hubble Space Telescope, a unique science platform that has been breaking new ground in astronomy for nearly 20 years.

When the spot was to be photographed again in November 1994 by the Hubble Space Telescope, it had disappeared completely, leaving astronomers to believe that it had either been covered up or vanished.

It was the first mission to service the Hubble Space Telescope, which had been launched three years previously.