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Mars’ atmosphere could help us better understand radio interference here on Earth

NASA’s MAVEN spacecraft has found signs of layers and rifts in the Martian atmosphere. Credit: NASA

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Have you ever tuned in to your favorite radio station only to hear another station playing on top of it? That’s a result of a weird atmospheric phenomenon called a sporadic E layer.

The Earth’s upper atmosphere, called the ionosphere, is a region full of charged particles. Those particles can be blown about by the wind, forming clumps called sporadic E layers. These dense layers of ions are constantly in flux appearing and disappearing at random which can be disruptive to radio communications.

With the help of the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft, NASA scientists have discovered the same phenomenon at Mars, which will help scientists better understand them.  Even though these layers are quite common here on Earth, they form at altitudes that are very difficult to explore.

Mars has a thinner atmosphere that allows spacecraft, like MAVEN, to fly at lower altitudes and observe many of these weird layers.

“The low altitudes observable by MAVEN will fill in a great gap in our understanding of this region on both Mars and Earth, with really significant discoveries to be had,” Joe Grebowsky, a former MAVEN project scientist at Goddard, said in a statement.

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MAVEN uncovered two types of structures — called layers and rifts — while studying the Martian ionosphere. The layers typically form suddenly and last for hours, acting like a mirror and reflecting radio signals. Scientists have known about the existence of these layers for a decade but have never been able to study them in detail until now.

“The layers are so close above all our heads at Earth and can be detected by anyone with a radio, but they are still quite mysterious,” Glyn Collinson of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and lead author on the study explained in the same statement. “Who would have thought one of the best ways to understand them is to launch a satellite 300 million miles to Mars?”

In total, the team found 34 E layers in the MAVEN data. They form higher in the Martian atmosphere and are probably too high to interfere with any future radio communications on the ground, which is good news for future human missions.

But they are troublesome here on Earth. In addition to interfering with your radio listening enjoyment, they can also block crucial radar signals that track things like aircraft and missiles.

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Graphic illustrating radio signals from a remote station (bent purple line) interfering with a local station (black tower) after being reflected off a plasma layer in the ionosphere. Credits: NASA Goddard/CI lab

In addition to the layers, MAVEN also found “rifts” in the planet’s atmosphere. These are gaps in the plasma basically the opposite of a layer. These areas have never been spotted on Earth.

One thing the team noticed in the data is that the layers and rifts seem to always form at the same places. They think that’s because of how the charged particles in Mars’s ionosphere react to its tangled magnetic field.

This observation could make them much easier to find and predict at Mars, which could help scientists identify them easier here on Earth and mitigate their effects.

The research was published in a paper in the journal Nature Astronomy.

 

 

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Elon Musk

SpaceX to decommission Dragon spacecraft in response to Pres. Trump war of words with Elon Musk

Elon Musk says SpaceX will decommission Dragon as a result of President Trump’s threat to end his subsidies and government contracts.

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SpaceX will decommission its Dragon spacecraft in response to the intense war of words that President Trump and CEO Elon Musk have entered on various social media platforms today.

President Trump and Musk, who was once considered a right-hand man to Trump, have entered a vicious war of words on Thursday. The issues stem from Musk’s disagreement with the “Big Beautiful Bill,” which will increase the U.S. federal deficit, the Tesla and SpaceX frontman says.

How Tesla could benefit from the ‘Big Beautiful Bill’ that axes EV subsidies

The insults and threats have been brutal, as Trump has said he doesn’t know if he’ll respect Musk again, and Musk has even stated that the President would not have won the election in November if it were not for him.

President Trump then said later in the day that:

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“The easiest way to save money in our Budget, Billions and Billions of Dollars, is to terminate Elon’s Government Subsidies and Contracts. I was always surprised that Biden didn’t do it!”

Musk’s response was simple: he will decommission the SpaceX capsule responsible for transporting crew and cargo to the International Space Station (ISS): Dragon.

Dragon has completed 51 missions, 46 of which have been to the ISS. It is capable of carrying up to 7 passengers to and from Earth’s orbit. It is the only spacecraft that is capable of returning vast amounts of cargo to Earth. It is also the first private spacecraft to take humans to the ISS.

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The most notable mission Dragon completed is one of its most recent, as SpaceX brought NASA astronauts Butch Wilmore and Suni Williams back to Earth after being stranded at the ISS by a Boeing Starliner capsule.

SpaceX’s reluctance to participate in federally funded projects may put the government in a strange position. It will look to bring Boeing back in to take a majority of these projects, but there might be some reluctance based on the Starliner mishap with Wilmore and Williams.

SpaceX bails out Boeing and employees are reportedly ‘humiliated’

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SpaceX hit with mishap investigation by FAA for Starship Flight 9

Starship’s ninth test flight has the FAA requiring a mishap investigation from SpaceX.

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Credit: SpaceX

SpaceX has been hit with yet another mishap investigation by the Federal Aviation Administration (FAA) related to the company’s ninth test flight of Starship earlier this week.

The FAA said the mishap investigation is “focused only on the loss of the Starship vehicle, which did not complete its launch or reentry as planned.” The agency said the loss of the Super Heavy booster is covered by one of the FAA’s approved test induced damage exceptions requested by SpaceX.

All of Starship and Super Heavy booster debris landed within the designated hazard areas, the FAA confirmed.

SpaceX Starship Flight 9 recap: objectives & outcomes

It said it activated a Debris Response Area out of an abundance of caution as the booster “experienced its anomaly over the Gulf of America during its flyback toward Texas. The FAA subsequently determined the debris did not fall outside of the hazard area. During the event there were zero departure delays, one flight was diverted, and one airborne flight was held for 24 minutes. ”

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SpaceX has become accustomed to mishap investigations by the FAA, as they have been impacted by them on several occasions in the past, including on Flight 8. However, they are a precautionary measure and usually are resolved within a few weeks.

Flight 9 was one of SpaceX’s most eventful, as there were several discoveries during the launch. First, it was SpaceX’s first time reusing a Super Heavy booster, as the one utilized for Flight 9 was also used on Flight 7 in January.

Contact with the booster and Starship were both lost during Flight 9. SpaceX said the booster was lost “shortly after the start of landing burn when it experienced a rapid unscheduled disassembly approximately 6 minutes after launch.”

Meanwhile, Starship was set to make a splashdown in the Indian Ocean, but the vehicle was lost about 46 minutes into the flight, SpaceX said in a mission recap.

It was an improvement from the previous two flights, as both 7 and 8 resulted in the loss of Starship after just a few minutes. Flight 9 lasted considerably longer. These flights are also not intended to make it to Mars, despite what other reports might try to tell you.

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These are ways to gain information for when SpaceX eventually tries to get Starship to Mars.

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Elon Musk

SpaceX Starship gets FAA nod for ninth test flight

The FAA has given the green light for Starship’s ninth test flight.

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(Credit: SpaceX)

SpaceX has received FAA approval for the ninth test flight of the Starship rocket. The approval was delayed due to the federal agency finishing its comprehensive safety review of the eighth flight earlier this year.

The FAA said in a statement that it has determined that SpaceX has “satisfactorily addressed the causes of the mishap, and therefore, the Starship vehicle can return to flight.”

The eighth test flight occurred back on March 6. SpaceX completed a successful liftoff of Starship and the Super Heavy Booster, before the two entered stage separation a few minutes after launch.

Starship Flight 8: SpaceX nails Super Heavy booster catch but loses upper stage

The booster returned and was caught by the chopsticks on the launch pad, completing the second successful booster catch in the program’s history. However, SpaceX lost contact with Starship in the upper atmosphere.

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The ship broke up and reentered the atmosphere over Florida and the Bahamas.

The debris situation caused the FAA to initiate a mishap investigation:

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The FAA said it will verify that SpaceX implements all the corrective actions on Flight 9 that it discovered during the mishap investigation.

There is no current confirmed launch window, but the earliest it could take off from Starbase is Tuesday, May 27, at 6:30 p.m. local time.

To prevent any injuries and potentially limit any damage, the FAA has stayed in contact with various countries that could be impacted if another loss of vehicle occurs:

“The FAA is in close contact and collaboration with the United Kingdom, Turks & Caicos Islands, Bahamas, Mexico, and Cuba as the agency continues to monitor SpaceX’s compliance with all public safety and other regulatory requirements.”

The agency has also stated that the Aircraft Hazard Area (AHA) is approximately 1,600 nautical miles and extends eastward from the Starbase, Texas, launch site through the Straits of Florida, including the Bahamas and Turks & Caicos.

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For flight 8, the AHA was just 885 nautical miles.

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