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ESA marks Asteroid Day on 30 June

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Asteroid Ryugu

ESA marks Asteroid Day on 30 June

24 June 2019

ESA can be collaborating on this 12 months’s Asteroid Day, the UN-endorsed world consciousness marketing campaign day on the small rocky our bodies scattered throughout area, going down on Sunday, 30 June.

The main event can be a 24-hour stay broadcast streamed from Luxembourg Metropolis, in coordination with a whole bunch of different occasions throughout Europe and the world.

ESA will share with media and public its various activities associated to asteroids, which it regards as an important topic for scientific research, as ‘time capsules’ from early within the historical past of the Photo voltaic System and the delivery of the planets.

Asteroids have influenced Earth’s improvement, as seen by the thousands and thousands of influence craters scarring our world. They’re additionally a promising supply of future assets and – final however not least – they pose a confirmed menace to Earth and human civilisation. ESA is taking motion as a part of a world effort to mitigate this threat.

Over the past 20 years, ESA has been performing detection and evaluation of asteroids whose orbits convey them near Earth, referred to as near-Earth objects (NEOs). There are an estimated 10 000 000 NEOs on the market bigger than 10 m – the brink above which harm on the bottom might occur.

In ESA's Flyeye telescope, a single mirror of 1 m equivalent aperture collects the light from the entire 6.7° x 6.7° field of view and feeds a pyramid-shaped beam splitter with 16 facets. The complete field of view is then imaged by 16 separate cameras that contain 16 detectors. The tubes contain a set of secondary lenses.

Mild pathways by the Flyeye telescope

As a part of its area security actions, ESA coordinates observatories and astronomers worldwide by its NEO Coordination Centre, positioned at ESA’s ESRIN facility in Italy.

Constructing on this expertise, ESA has developed a brand new kind of automated telescope for nightly sky surveys. This ‘Flyeye’ telescope splits its picture into 16 smaller subimages to broaden the sphere of view, much like the approach exploited by a fly’s compound eye.

A community of those Flyeye telescopes would fully scan the sky and mechanically establish potential NEOs for observe up and later checking by human researchers.

The primary Flyeye telescope is being put in atop the 1865-m Monte Mufara mountain in Sicily; the identical island the place the very first asteroid was found again in 1801.

A community of Flyeye telescopes is being proposed for approval by Europe’s area ministers at Area19+ this November as a part of ESA’s Space Safety initiative.

Testing asteroid deflection

Additionally being put ahead as a part of the Area Security plans is Europe’s contribution to a pioneering worldwide asteroid deflection experiment for planetary defence: the Hera mission, which is proposed for launch in October 2024.

Hera can be humankind’s first mission to a binary asteroid system, the Didymos pair of near-Earth asteroids.

Utilizing its laser altimeter Hera scans Didymoon’s floor

The spacecraft would concentrate on the smaller of the 2, which, if all goes properly within the meantime, can have attained the distinctive standing as the primary physique within the Photo voltaic System to have had its orbit shifted in a measurable method.

This orbit shift can have been carried out by NASA’s half of the experiment – the Double Asteroid Redirect Take a look at, or DART. This spacecraft is because of slam into the asteroid moon in late 2022 in a bid to change its orbit round its dad or mum asteroid.

This deflection can be viewable from Earth telescopes and radars, however Hera will carry out a close-up survey to assemble important further data that may not in any other case be out there. This contains the asteroid’s mass, the crater measurement and form and the asteroid floor traits and subsurface make-up.

This added data ought to flip this grand, one-off experiment right into a well-understood approach that may very well be tailor-made to explicit targets, ought to an incoming asteroid ever wanted deflecting for actual.

Hera will even collect bonus science on the origins and nature of binary asteroids – a category making up 15% of all recognized asteroids – and check new applied sciences in deep-space situations, together with the deployment of Europe’s first CubeSats in deep area.

Grain from Japan’s Hayabusa spacecraft

A pair of briefcase-sized spacecraft will make their very own surveys of the asteroid with state-of-the-art miniaturised measurements earlier than trying touchdown.

This multi-spacecraft mission ought to due to this fact give important expertise in ultra-low gravity operations, priceless to the planning and design of future asteroid mining missions.

ESA is in the meantime performing scientific research on asteroids, presently together with evaluation of microscopic grains returned to Earth by Japan’s Hayabusa mission in 2010.

Europe and asteroids

Near-Earth objects could potentially hit our planet and, depending on their size, produce considerable damage. While the chance of a large object hitting Earth is very small, it would produce a great deal of destruction.

Tunguska devastation

Europe’s historical past with asteroids goes again a great distance. Our continent was residence to the 19th century ‘celestial police’ group of astronomers who noticed the primary asteroids within the hole between Mars and Jupiter.

Within the following century, it grew to become clear that asteroids are additionally orbiting within the neighborhood of Earth.

Asteroid Day commemorates the most important noticed asteroid strike in recorded historical past – the 1908 airburst above Tunguska in largely abandoned Siberia, which felled round 60 million bushes.

This represented a fortunate escape for Europe: it occurred only a brief rotation of Earth away from affecting closely populated areas of our continent.

Quick ahead a century and Europe got here nose to nose with an asteroid for the primary time, as ESA’s Rosetta mission flew previous Šteins, a Gibraltar-scale diamond-shaped physique.

A second shut encounter occurred in 2010, as Rosetta handed the mammoth 100 km-diameter Lutetia – some 250 occasions larger than Rosetta’s ultimate goal, Comet 67P/Churyumov–Gerasimenko.


ESA hopes to construct on the expertise from Rosetta to finalise its Hera mission. Tiny, self-supporting CubeSats for asteroid exploration are additionally underneath improvement.

Asteroid Day reminds us that we stay in a Photo voltaic System crammed with historic and fast-moving area rocks, and any influence may very well be devastating.

ESA is in a novel place, with the cooperation and help of 22 member states, to coordinate the info, data and experience wanted to know and reply to asteroid threats as a part of humanity’s planetary defence efforts.

Asteroid Day

Asteroid Day is a programme of Asteroid Basis, a Luxembourg non-profit organisation.

Viewers all over the world have been receiving a month of programming in celebration of Asteroid Day because of distribution by way of a devoted SES satellite tv for pc and on-line. The programming will culminate on 28 June with Asteroid Day LIVE, a 24-hour stay broadcast produced by Asteroid Day and sponsored by SESBroadcasting Center Europe and the Authorities of Luxembourg. 

Annually on 30 June, the worldwide UN-sanctioned Asteroid Day takes place to boost consciousness about asteroids and what might be executed to guard Earth from potential influence. The day falls on the anniversary of the Tunguska occasion that occurred on 30 June 1908, essentially the most dangerous recognized asteroid associated occasion in current historical past. Observe the 48-hour Asteroid Day broadcast from https://asteroidday.org/ this weekend, and be part of the dialog on-line by way of #AsteroidDay2019

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