Herschel and Planck launched 14.5.

The long trip to the orbit
Source ESA

On May 14, 2009, the Ariane 5 was successfully launched with its 1.9 billion euro load from Kourou spaceport in French Guiana at 1312 GMT. See ESA web page for details about this remarkable launch.

The flight of the Ariane 5 lasted half an hour and the two satellites are now on their way to their positions 1.5 million kilometers from planet Earth. The travel to their destination will take between two and three months so Europaean Space Agency (ESA) scientist will be trying to hear the first signals in July or early August this summer.

If no signal is heard --- banish the thought!

These two satellites are collecting electromagnetic radiation to let physicists probe the origins of the Universe. The data they collect and send to Earth may revolutionize its inhabitants knowledge of the first stages after the Big Bang by studying the "oldest light" of cosmic microwave radiation and the infrared wavelengths of light under extreme cold conditions.

It is very interesting to read BBC science news how Professor George Efstathiou from Cambridge University, UK, said

It's possible we could find a signature from before the Big Bang; or it's possible we could find the signature of another Universe and then we'd have experimental evidence that we are part of a multi-verse.

Multiverse indeed

May the distant signals of these two satellites be heard loud and clear!

Herschel and Planck to be launched soon, May 6 postponed

European Space Agency (Esa) has been working for twenty years on the Herschel telescope looking for infra-red light. It is been shipped to Kourou spaceport in South America to be launched to its orbit by an Ariane 5 rocket.

Pretty high it will go - 1.5 million kilometers from Earth.

In the same rocket will also be the Planck telescope that will look for micro-wave radiation.

That launch is going to cause some sleepless nights in Paris. London, Bruxelles, Berlin and elsewhere. Twenty years of work on Herschel plus the Planck with a joint value of 1.7 billion Euro.

One point seven billion Euro.

Just to study radiation from the Big Bang (and some other stuff of interest to astronomers)

James Webb. the Big One, in 2010 or so

Hubble is looking at visible light.

Herschel will be looking at infra-red light that is below the wavelength of our eyes.

Planck will be looking at microwaves.

Inspecting Herschel telescope. Courtesy of Esa.

British astronomer William Herschel (1738-1822) discovered infra-red light and the 3.5 meter telescope is named in his honour. Not one spot of dust is allowed in this surface and in the highly accurate instrument for which a distant 60 W electric lamp would be like a burning furnace.

Inspecting the Planck telescope. Courtery of Esa.

The very high-tech microwave telescope is named in honour of German physicist Max Planck (1858-1947) - one of the key scientists in the modern revolution of Theoretical Physics.

There is a very educational and clear page in BBC web site giving in depth details about the goals and methods of the Herschel project.


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Let us think the worst and something blows those huge tanks of highly flammable liquid oxygen and liquid hydrogen into smithereens during the launch at Kourou.

On the other hand, let us not even imagine that!

it is really one shot chance and the risks are enormous.

ESA has now informed that the launch planned for May 6 2009 has been postponed because of anomalies in the Ariane 5 rocket. They decided to check it again.

Wise move