Is Earth still Earth if all life on Earth dies?

Absent anyone to give it a name, all celestial bodies will cease to have one. The Sun will no longer be "the Sun," Jupiter will no longer be "Jupiter", etc... If you're referring to something more technical, Earth was a planet well before life appeared on it, and it will continue to be long after it ends.

we are life its us that creates science and names and a reason as we grow further away from our roots the Earth and its bounty is less appreciated and Technology enthrals us, Aliens may land in a billion years kick the radioactive dust and a piece of un -destructible plastic appears and they may say "what creature created this ?" "maybe a "god" is the reply "