as per jain does life exist other than earth

Yes. In Jainism, life is not limited to Earth alone.

According to Jain cosmology, जीव (jiva, soul) exists in many realms of the Lok:

• Naraka realms below
• Manushya realm in the middle world, where Earth is included
• Deva realms above
• Also in many forms of life throughout the universe, not only on one planet

Jainism teaches that souls are found in countless living beings across the universe, depending on their karma and birth. So, from the Jain view, life definitely exists beyond Earth as well.