Active asteroid 6478 Gault last night from the @INGLaPalma after discovery by @TheGenghisKen @fallingstarIfA . The ejected dust extends > 400,000 km, more than the Earth-Moon distance.

From observations by @astrostevanus and @Sun_d_citizen @AstroQUB pic.twitter.com/Xc1ByV4OhJ

— Alan Fitzsimmons (@FitzsimmonsAlan) 12 January 2019