内容摘要：Natural Resources Conservation Service, Renton, Wash. (1,451 square feet)

Natural Resources Conservation Service, Renton, Wash. (1,451 square feet)

filled with ammonium nitrate that killed 15 people.Sella, the chemistry professor, said the reddish cloud likely was nitrogen dioxide, which can be produced when burning ammonium perchlorate or ammonium nitrate. However, the reports about the missile fuel shipment suggests it was ammonium perchlorate, he said.

DUBAI, United Arab Emirates (AP) — Iran finally extinguished a fire Monday at a southern port rocked by an explosion as the death toll in the blast rose to at least 70 people killed, authorities said.Satellite images analyzed by The Associated Press also showed thethat injured more than 1,000 people. The photos from Planet Labs PBC came as local news reports from the site raised more questions about the cause of the blast Saturday at the Shahid Rajaei port near Bandar Abbas.

Iranian Interior Minister Eskandar Momeni announced the fire had been put out, while provincial emergency health official Mehrdad Hasanzadeh gave the death toll.The port reportedly took in a chemical component needed for solid fuel for ballistic missiles — something denied by authorities though they’ve not explained the source of the power that caused such destruction.

The blast Saturday disintegrated a building next to the blast site, which appeared to be in a row where other containers once stood, the satellite photos showed. It also shredded the majority of another building just to the west.

The force of the blast also could be seen, with what appeared to be two craters measure some 50 meters (165 feet) across. Other containers nearby appeared smashed and distended by the explosion and the intense fire that followed.The Chinese Academy of Sciences’ Sen Hu said he and his team received 5 grams of soil samples, then selected 578 particles for detailed analysis using electron microscopes.

They estimated the water abundance at less than 1.5 micrograms per gram, on the dry end of what’s been found in samples gathered over past decades from the moon’s near side. Measurements on samples from the near side have ranged between 1 microgram and 200 micrograms per gram.Given the limited sampling, it’s uncertain how widespread this dry condition might be, the scientists noted in their study published in the journal Nature.

“More far side samples are required for testing and further unraveling” how much water there is, Hu said in an email.It’s possible the impact that created this basin may have blasted water elements to the near side, leaving the far side depleted. Another possibility is that the vertical distribution of water could be different between the two hemispheres.