Olivia Newton-John's husband has said their love for one another "transcends our understanding" in a heartfelt tribute to the late singer and actress.
John Easterling said his late wife was "the most courageous woman I have ever known" and that her caring nature "almost eclipses what is humanly possible".
The star, best known for playing Sandy in the 1978 hit film Grease opposite John Travolta, died on Monday aged 73 after a long battle with cancer.
Sharing news of her death on social media, Easterling said she had passed away "peacefully", surrounded by family and friends.
In a new post, shared from his late wife's account on Wednesday, he thanked fans for "the ocean of support that has come our way."
"Our love for each other transcends our understanding," he captioned a picture of himself and his late wife.
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"Every day we expressed our gratitude for this love that could be so deep, so real, so natural. We never had to 'work' on it.
"We were in awe of this great mystery and accepted the experience of our love as past, present and forever."
He continued: "At Olivia's deepest essence she was a healer using her mediums of song, of words, of touch.
"She was the most courageous woman I've ever known.
"Her bandwidth for genuinely caring for people, for nature and all creatures almost eclipses what is humanely possible.
"It is only the grace of God that has allowed me to share the depth and passion of her being for so long.
"In her most difficult times she always had the spirit, the humor, and the will power to move things into the light.
"Even now as her soul soars, the pain and holes in my heart are healed with the joy of her love and the light that shines forward."
Signing off, he added: "Our family deeply appreciates the vast ocean of love and support that has come our way.
"Onward Ho, John Easterling."
Following news of Newton-John's death, famous faces across the creative industries including John Travolta, Dolly Parton, Elton John and Kylie Minogue paid tribute to the star.
The cast of the current production of Grease The Musical on London's West End have dedicated the entire rest of the run to her memory and said they were honoured to "follow in her footsteps each night".
Newton-John is also survived by her daughter, Chloe Lattanzi.
Source: Press Association