After nearly four years of playing catchup, Boeing is finally set to join SpaceX as one of two commercial partners capable of flying NASA astronauts to the International Space Station.

Boeing's CST-100 Starliner is aiming for a May 6 launch, carrying commander Barry "Butch" Wilmore and pilot Sunita "Suni" Williams on the Crew Flight Test. They will fly atop an Atlas V rocket from Cape Canaveral Space Force Station's Space Launch Complex 41.

The duo are looking to dock Starliner with the ISS for about eight days before bringing the spacecraft back home for a ground landing in the western U.S. It will pave the way for Boeing to begin regular service to the station as part of NASA's Commercial Crew Program, the remedy to reliance on Russia for ferry service to the ISS after the end of the space shuttle program in 2011.

"It's really exciting to finally get here to this day," said Williams, and "represent so many people who have worked for years to get this Boeing Starliner ready to go. We just happen to be the tip of the spear, the face of it, and take it to space.

With less than a week away from the solar eclipse, weather forecasters are keeping an eye on the cloud cover, which can make or break a person's chance to see the event.

Different types of clouds have different effects on a person's viewing experience. When the moon completely covers the sun April 8, it will be the first total eclipse in North Texas since 1878.

Generally, clouds are divided based by their height: low-level, mid-level and high-level.

What are stratus clouds?

The type of clouds does depend on the system, which is the movement of warm and cold air. But in the springtime, there's a good chance the Dallas-Fort Worth area gets many stratus clouds, said Monique Sellers, a meteorologist with the National Weather Service in Fort Worth. They are low-level cloud layers that sometimes appear as ragged sheets, per the National Oceanic and Atmospheric Administration.

Multiple layers of clouds are possible in the area, she said, but most times, lower cloud decks are observed locally. In North Texas, Sellers said, the altitude of the layers don't vary as much: lower clouds can vary anywhere from 1,500 feet to 6,000 feet in the air, mid-level clouds are anywhere between 6,500 to 23,000 feet up and high-level clouds are anything above that.

Three companies are in the running to provide NASA's next moon rover for crewed missions planned later this decade, the space agency said Wednesday.

Texas-based Intuitive Machines—which landed a robot near the lunar south pole in February—Lunar Outpost of Colorado and Venturi Astrolab of California have been tasked with developing designs under a contract with a combined maximum potential value of $4.6 billion.

The upper-stage helium tank of the Ariane 3 that was launched in 1985 was recovered in Uganda in 2002 after re-entry. Molten aluminum splashes were discovered on the tank, which have been identified as deposits from local fixings.

The ESA and CNES (French Government Space Agency) want to further investigate how the splashes were caused and the potential effects on titanium and stainless steel materials by recreating, for the first time, this extreme environment and re-entry scenario on the lab scale.

Dr. Yunus Azakli, Engineering Lead for Materials Discovery and Prototyping, adapted the Arcast SC100 at the Royce Discovery Center, Sheffield, to drop molten aluminum on to sheets of Ti-6Al-4V and 316L that had been heated by a specially designed mini furnace to recreate the Ariane 3 materials found in 2002 following its re-entry.

The conditions during atmospheric Earth re-entry of spacecraft can cause some aluminum alloy parts to melt and deposit onto other metallic components. The interaction of such ejecta with titanium components such as helium pressure tanks has, so far, not been widely researched and there is uncertainty on the surface reactions during re-entry.