Astronomy’s climate emissions: Global travel to scientific meetings in 2019 by Gokus, A, Jahnke, K, Woods, PM, Moss, VA, Ossenkopf-Okada, V, Sacchi, E, Stevens, ARH, Burtscher, L, Kayhan, C, Dalgleish, H, Grinberg, V, Rector, TA, Rybizki, J, White, J