A UAE satellite captured the devastation to the Beirut port area from 600km in orbit.
KhalifaSat showed images of before and after Tuesday's devastating blast, which left at least 145 dead, 5,000 injured and levelled much of the Lebanese capital.
Mohammed bin Rashid Space Centre in Dubai shared the image on Twitter and sent its best wishes to Beirutis struggling to overcome the aftermath.
"We hope that our brothers and sisters in Lebanon overcome these difficult times," the space agency wrote.
On Thursday, thousands gathered as France's president Emmanuel Macron toured the badly damaged capital, reflecting the historic ties between the two nations.
"Lebanon is not alone," Mr Macron said on Twitter, before he landed and was received by President Michel Aoun.
Most shops remained closed and roads were blocked by smashed cars, cement slabs and fallen trees.
The blast's shock wave left barely a window in the city unbroken, though thousands helped to clear glass from the streets on Thursday in an act of solidarity.
Aircraft carrying emergency aid from the US and France are expected to arrive in Lebanon on Thursday, while the UAE's leaders sent aid worth tens of millions of dirhams to hospitals in the capital.
