Axios

SpaceX chief Elon Musk laughed off a question about a potential IPO for the company's satellite internet business during a live Twitter audio interview with Bloomberg on Saturday, saying it wouldn't be "legal" for him to comment.

Behind the question: The business, Starlink, is the primary driver of SpaceX's valuation, investors say.

At least 45 million people across seven states are under threat from extreme temperatures on Monday, as Texas’ brutal heat wave expands.

The big picture: The high-pressure area aloft, or heat dome, responsible for this event is moving out of Mexico, parking itself over Texas this week.

Over 380,000 customers were without power on Monday morning across the Southern U.S. after strong storms struck the region with high winds and hail over the weekend, according to poweroutage.us.

The big picture: Swaths of Arkansas, Mississippi and Louisiana hit by the storms and without power were also under excessive heat and severe thunderstorm warnings by the National Weather Service.

Over 50 million people in the southern U.S. were under heat advisories and many others were facing the threat of severe weather that spawned tornadoes and thunderstorms over the weekend and into Monday.

State of play: The severe storms saw an estimated 168,000 customers lose power in Georgia, along with some 132,000 others in both Kentucky and Tennessee and a further 126,000 in Arkansas early Monday, while a series of suspected tornadoes late Sunday damaged property in Indiana and killed a person in the state's Martin County.

The underwater eruption of the Hunga Tonga-Hunga Ha’apai volcano last year generated a supercharged storm — and the most intense lighting event on record.

Why it matters: Observations of the eruption-induced storm could help efforts to one day monitor the hazards from volcanoes using real-time lightning data, according to the researchers who led the study.

The catastrophic implosion of a submersible near the wreckage of the Titanic is a sobering moment for another extreme and risky tourism industry: private human spaceflight.

Why it matters: It's not a matter of if, but when a deadly accident will rock the commercial human spaceflight industry, experts say.