Alex Alishevskikh captured this photo of a fireball exploding above Chelyabinsk City on 15 February 2013. Asteroid Day aims to increase public awareness of events such as these, including any potential threats to life and how they can be avoided. Copyright Alex Alishevskikh CC BY-SA 2.0 via


Asteroid Day is an annual event to increase awareness of potential asteroid impacts on Earth.

Running for its second year in 2016, the event was founded by Brian May, Apollo astronaut Rusty Schweickart and German filmmaker Grig Richters.

Asteroid Day takes place on 30 June to mark the date of the Tunguska explosion in Siberia in 1908, thought to have been caused by a meteor.

ESA is set to announce the events that will be held this year to mark the day.

Watch the announcements live, as they happen, in the window below.


The conference is due to begin today at ESA’s ESTEC technical centre at 14:00 UTC.