On this day in science history: 30 April

From the days of ancient technology to modern science - find out what happened on this day in the history of science.

30th April 2017
On this day in science history: 30 April © Getty

1483 - Pluto overtakes Neptune

According to modern orbital calculations, Pluto moves inside Neptune’s orbit.

By calculating and backdating the orbits of the planets in our Solar System it was determined that from 30 April 1483 to 23 July 1507 the tiny dwarf planet moves closer to the Sun than the planet Neptune.

The irregular, elliptical orbit of Pluto takes 248 years to complete, which means since its discovery in 1930 it has completed only 35 per cent of one orbit. But, there’s no need for concern over an astronomical collision, the inclined orbit of Pluto (17 degrees) means they won’t clash.

1967 - Tallest structure in the world completed

The Ostankino television and radio tower nears completion in Moscow, 26 July 1967 © Keystone/Hulton Archive/Getty Images
The Ostankino television and radio tower nears completion in Moscow, 26 July 1967 © Keystone/Hulton Archive/Getty Images

Ostankino tower in Russia is officially completed, measuring 537 metres high and becoming the tallest structure in the world.

The title of tallest structure in the world had up to this point been held by the Empire State Building in New York since 1937, but the new TV tower opened in 1967 was the first structure built to surpass 500 metres in height. There is a revolving restaurant at 334m as well as an observation deck and a climb of 1,706 steps. We would recommend the lift as a more viable option.

Officially opened on the fifth of May, the Ostankino tower would be the tallest thing on the planet until the CN tower was completed in Toronto.

1993 - World Wide Web made public at CERN

Sir Tim Berners-Lee © Catrina Genovese/Getty Images
Sir Tim Berners-Lee © Catrina Genovese/Getty Images

World wide web software is placed in the public domain, effectively allowing free use of the web to the masses.

Sir Tim Berners-Lee proposed the idea whilst working at CERN in 1989, where through a series of links information could be shared over the internet.

The royalty-free web being released with an open license has allowed for the huge spread of the internet and the world wide web.

2013 - Youngest patient ever receives new stem cell organ

Two-year-old Hannah Warren becomes the youngest ever person to receive a stem cell bioengineered organ.

The young girl from South Korea was born without a trachea and travelled to Illinois, USA for treatment by Dr Paolo Macchiarini, the surgeon and researcher who lead the surgery, along with local paediatrician Mark Holterman.

Initially the surgery was a success with the windpipe performing as expected, but sadly, unrelated health conditions caused a steadily diminishing standard of health for the young girl. Sadly, she passed away in July 2013, shortly before her third birthday.

The operation was not without controversy and Dr Macchiarini has since been caught in a research fraud scandal after being accused of falsifying data. 

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