The twin-turboprop Beechcraft Super King Air had just taken off from Newcastle Airport north of Sydney when its pilot raised the alarm, officials said.
Online footage shared by locals showed thick plumes of smoke rising high into the sky with houses in the foreground. In some photos, haze seemed to cover wide areas.
Photos taken from all over the world show bright-colored skies across Europe, New Zealand and in the U.S., where it was visible farther south than usual.
Russia’s defense ministry said its forces had taken five border villages in the Kharkiv region, but the area's Ukrainian governor said the fight for control was ongoing.