He's found so many comets, they named a comet after him.

Comets are very much like asteroids.

It was on my fourth trip to Everest that a comet passed over the mountain. Hyakutake.

And when the comet hits, the pressure produces the buckyballs, and it captures bits of the comet.

It was the first totally disrupted (fragmented) comet ever to be observed, and the first to be seen orbiting and impacting a planet.

Halley's Comet will come back in 2061.

He's found more than 140 comets.

It's kind of out past Mars. It's a hike.

Comets are a tougher act.

While I was in Easter Island, comet McNaught was there also, so you get a gratuitous picture of a moai with a comet.

We don't really have the technology to predict comet trajectories, or when one with our name on it might arrive.

But he found 140 comets without a telescope.

And this is a comet, captured by Dr. Euan Mason.

This was the impact that happened last week on a comet.

There we see Mars, again with various names.

Comets provide important information about the origin of the solar system because they are the most primitive objects in the system and their chemical composition has not changed very much since their formation.

We need a dedicated observatory that looks for comets.

Comets are carriers of complex organic molecules, which, brought to Earth through impacts, perhaps played a role in the origin of life.

We did move the comet a little tiny bit, not very much, but that wasn't the point.

This work is carried out mainly in the Asteroids and Comets Department of the Institute by five scientists and, on average, two research students.

Its main target is to orbit around comet 67P Churyumov Gerasimenko for about one year as it heads towards the Sun and to release the Philae lander on the surface of the nucleus to perform in situ experiments.

When the mission was over, they actually landed on the thing.

You'll notice that a lot of comets are named after people you never heard of, amateur astronomers? That's because nobody's looking for them, except amateurs.

For example, ground observations conducted under the Near Earth Object program detected the Shoemaker Levy 9 comet in 1993 and predicted its impact upon Jupiter in July 1994.

Rosetta will also make a great contribution to understanding whether comets contributed to the beginnings of life on Earth.

Rosetta was launched on 2 March 2004 and will reach the comet in 2014 after two asteroid fly bys, of Steins in 2008 and Lutetia in 2010.

If we can find comets without a telescope, shouldn't we be able to find words?

This evidence was used to suggest that at the end of the Permian, 250 million years ago, a comet hit us.

The purpose was to make a crater to excavate the material and see what was underneath the surface of this comet, which we learned quite a bit about.

That signal was so strong, it could only have been produced by 10 trillion tons of water buried in the sediment, collected over millions and billions of years by the impact of asteroids and comet material.

And in those 50 years, not only did we literally, physically set foot on the moon, but we have dispatched robotic spacecraft to all the planets all eight of them and we have landed on asteroids, we have rendezvoused with comets, and, at this point in time, we have a spacecraft on its way to Pluto, the body formerly known as a planet.

In 1908, just a 200 foot piece of a comet exploded over Siberia and flattened forests for maybe 100 miles.

Their composition thus reflects that of the solar system when it was very young and still unfinished , more than 4,600 million years ago.

The activities at the institutional level do not meet the recommendations of Council of Europe resolution 1080 of 20 March 1996 on the detection of asteroids and comets potentially dangerous to humankind.

In the year 2005, NASA launched a probe called Deep Impact, which slammed into slammed a piece of itself into the nucleus of a comet.

By orbiting comet 67P Churyumov Gerasimenko and landing on it, Rosetta will enable us to reconstruct the history the Earth's own neighbourhood in space.

Here is, in fact, what you get if you, for example, look at the distribution of amino acids on a comet or in interstellar space or, in fact, in a laboratory, where you made very sure that in your primordial soup that there is not living stuff in there.

The formation of craters and associated effects of asteroid and comet impacts on the Earth are currently being analysed in a theoretical study involving advanced computer modelling and simulations.

Moreover, volatile light elements carried by comets may also have played an important role in forming the Earth's oceans and atmosphere.

CARA apos s South Pole Infrared EXplorer (SPIREX) telescope was able, because of its unique location, to image more of the impacts of Comet Shoemaker Levy 9 with Jupiter than any other instrument.

As of February 1995, 21 scientific and test spacecraft had been launched, including Suisei and Sakigake, which explored Halley apos s comet in 1986.

Such objects were a comet or asteroids in orbit within 0.3 astronomical miles (AU) of Earth and presenting a potential hazard if they were greater than 150 metres in diameter and came within 0.05 AU of Earth.

Earth, if we're lucky enough if it doesn't get hit by a Hale Bopp, or gets blasted by some supernova nearby in the next seven billion years we'll find under your feet.

In the course of a PhD project, in cooperation with the Dresden University of Technology, various potential techniques for diverting asteroids and comets from collision with the Earth have been investigated and modelled.

It was mainly to that end that Commission 20 of the International Astronomical Union (IAU) on positions and motions of asteroids, comets and satellites, took the initiative to present a resolution on the matter to the twenty first General Assembly of IAU, in 1991.