NASA. LARGE FORMAT. Exceptional photograph of a solar flare. A solar flare or chromospheric eruption, commonly - but incorrectly - referred to as a solar storm, is a primordial event in the Sun's activity. The variation in the number of solar flares defines a solar cycle with an average period of 11.2 years. 2015. Vintage chromogenic print. References in the plate on the front. Legend on label on back. 40.6 x 40.6CM with margins.

Composed of several subsidiaries, the Drouot Group is a major player in the art market. Hôtel Drouot, located in the heart of Paris, has been the world's largest public auction center since 1852. 15 salerooms are available to more than 70 auction houses. The emulation generated by an annual offer of 230,000 artworks from 21 major specialities - from Antiquity to street art - attracts some 3,000 visitors every day. The Group's digital platform, Drouot.com, offers digital sales - Live auctions (live broadcasting and participation in auctions), Online-only auctions (dematerialised auctions) and Buy Now sales (sales of lots at fixed prices). Nearly 2 million items are offered annually by 600 auction houses. Auction news is reported every week in La Gazette Drouot, the leading weekly magazine for the art market and culture published by Auctionspress.