That speed (5 million mph = 2,235,200 m/s) is not quite 1% of the speed of light (299,792,458 m/s). The article is about a large Gaia data release [1] not just

That speed (5 million mph = 2,235,200 m/s) is not quite 1% of the speed of light (299,792,458 m/s). The article is about a large Gaia data release [1] not just the speed of one astronomical object. Maybe change the title (currently "Supernova-propelled white dwarf found zooming through Milky Way at 5 million mph "). [1] https://www.cosmos.esa.int/web/gaia/dr2 https://www.cosmos.esa.int/web/gaia/dr2