Connect with us

News

SpaceX talks results of ‘DarkSat’ coating aimed at reducing brightness of Starlink satellites

Published

on

SpaceX successfully launched another batch of Starlink satellites into space on March 18, the fourth such launch this year. That brings the total number of internet-beaming satellites to 362, which includes two experimental ones. But ever since the initial batch got off the ground, astronomers and skywatchers have voiced concerns over the apparent brightness of the satellites.

That’s because the satellites appear in the night sky as a train of bright white dots marching across the sky. The sight is alarming to scientists who depend on clear skies in order to peer deep into space. Their concern is this: if the satellites are already interfering with telescope observations, what’s going to happen when there are 42,000 in orbit?

Initially, SpaceX has said its Starlink network will consist of 1,584 satellites, all operating in low Earth orbit. But the company has approval from the Federal Communications Commission for 12,000 satellites and could seek permission to launch 30,000 more. And they’re not the only company with space internet ambitions; OneWeb and Amazon have similar constellations planned.

SpaceX says it’s building satellites four times faster than OneWeb, by far its closest competitor. (SpaceX/Arianespace)

To help assuage their concerns, SpaceX decided to test out an experimental coating that would reduce the brightness of its satellites. SpaceX tested it out on a previous launch, on one individual satellite, aptly named “DarkSat”.

During the live broadcast of the most recent Starlink mission, SpaceX representatives said that the experiment was somewhat successful and that the coating did help to reduce the satellite’s brightness. But SpaceX wanted to try other means to see which technique was the more effective.

“Preliminary results show a notable reduction,” said Jessica Anderson, one of the hosts of the webcast. But just how effective it is remains to be seen.

Advertisement

Astronomers in Chile measured the DarkSat’s brightness and compared it to the rest of the Starlink satellites. The findings show that the DarkSat was about 55% dimmer, which is good news for certain telescopes. Other telescopes, like the upcoming Vera Rubin Observatory will need the brightness reduced even further as the sensitive optics would be greatly affected by the satellites zooming across the sky.

Starlink satellites trail across images from DECam Credit: Cliff Johnson/Clara Martínez-Vázquez/DELVE Survey

Astronomers ran computer simulations that showed that the Starlink satellites would not only show up as pronounced streaks across images, but would saturate the pixels in the detectors, causing other ghost-like artifacts to appear. Observatories like the Vera Rubin would need the satellites to be at least 10-20% darker to mitigate their effects.

During the broadcast, Anderson also explained that the company was looking into other ideas that could reduce the satellites’ reflectivity even further.

One of those other ideas is a sunshade. SpaceX didn’t divulge too many details, other than the fact the technology would be used on a future mission and that it would deploy like a patio umbrella from the satellite. How that compares to the coating on the DarkSat remains to be seen.

 

Advertisement
Advertisement
Comments

Elon Musk

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

Tesla has a few paths to limit damage from the elimination of tax credits.

Published

on

President Donald J. Trump purchases a Tesla on the South Lawn, Tuesday, March 11, 2025. (Official White House Photo by Molly Riley)
President Donald J. Trump purchases a Tesla on the South Lawn, Tuesday, March 11, 2025. (Official White House Photo by Molly Riley)

The United States House of Representatives passed President Trump’s “Big Beautiful Bill” by a vote of 215 to 214 on Thursday, effectively bringing an end to many EV subsidy programs, like the $7,500 tax credit, by the end of this year.

The bill will not only eliminate the $7,500 credit on new EV purchases, but also the $4,000 credit given on the purchase of used electric vehicles, and a $1,000 credit on the installation of Level 2 chargers. It will also impact solar subsidies that help generate clean energy in a residential setting.

EVs would also be subject to a $250 road use fee.

All of these things sound like negatives — truly because they are. Those who are not in a financial position to buy an EV this year, even with the tax credit, might not be able to afford them in the coming years either, unless manufacturers are able to bring pricing to a level that is more accessible to consumers.

In theory, President Trump’s focus on bringing manufacturing back to America would bring prices down, but it won’t happen overnight. Companies will take many years to completely bring manufacturing and part sourcing to the United States.

However, Tesla could feel some positives from this bill, and it all comes down to timing. Of course, in the long term, it wouldn’t be great for the company, especially if it did not have two things going on right now: a slightly lagging delivery pace and the introduction of affordable models.

Tax Credit Sunsetting Advantage

Sunsetting the $7,500 tax credit means one thing: those who have been in limbo over buying an EV from Tesla are going to have to make a decision on whether they want to buy this year and still have access to the credit, or test their luck and hope for price reductions.

Advertisement

More than likely, those who have been on the fence will be willing to pull the trigger this year, and Tesla will definitely gain some sales from this fact alone. Other automakers will, too.

This could help offset Tesla’s slow start to the year, which has been caused by the changeover of production lines of the Model Y across each of its factories globally.

Affordable Models

Tesla said earlier this year that it will roll out affordable models in the first half of 2025. These cars are expected to be around the $30,000 mark, but the company has not shed any true information on what they will cost.

Potential affordable Tesla “Model 2/Model Q” test car spotted anew in Giga Texas

Ideally, the cars would cost under $30,000 without the EV tax credit, which would be more than accessible for many car buyers in the United States.

Advertisement

The introduction of models that are not in need of a tax credit to be affordable to the masses. This would help offset some of the losses Tesla might feel from cars losing the tax credit.

Continue Reading

Investor's Corner

X clarifies xAI prediction market rumors, hints at future plans

Musk’s AI firm denied rumors of a Kalshi deal but left the door open. Prediction markets + AI could change how we forecast everything.

Published

on

Credit: xAI

X dismissed rumors of xAI entering prediction market partnerships. In a recent X post, Elon Musk’s company clarified that xAI had not yet entered formal partnerships in the prediction market.

However, xAI clarification hinted at future exploration in the prediction market, aligning with X’s goal to become an “everything app.” The speculation underscores AI’s potential to reshape predictive analytics.

“Recent speculation about xAI’s involvement in the prediction market space has been circulating. While we’re enthusiastic about the potential of this industry and engaged in various discussions, no formal partnerships have been confirmed to date. Stay tuned!” noted the X team.

X’s statement followed a Tuesday post by Kalshi, hinting at a collaboration with xAI, which was deleted hours later. Kalshi suggested that xAI could leverage AI to analyze X’s news and social media data, enhancing betting decisions on political and economic events.

Advertisement

Bloomberg reported Kalshi aims to use xAI for tailored insights, enabling users to wager on outcomes like Federal Reserve rate changes or elections through derivative contracts.

“There’s deep alignment between prediction markets, social media, and AI. Prediction markets capture what people know — AI scales what people can know,” said Kalshi CEO Tarek Mansour. “This is just the beginning of a long collaboration to unlock the full potential of prediction markets.”

The prediction market industry fits X’s vision to evolve into a comprehensive platform, capitalizing on its trend and news leader role. While xAI’s denial quashes immediate partnership claims, its openness to discussions signals potential interest in prediction markets, where AI could amplify real-time insights.

xAI’s cautious stance reflects its focus on strategic AI development while navigating speculative buzz. As X pursues its “everything app” ambition, prediction markets could enhance its ecosystem, blending social media’s pulse with AI-driven analytics. With no partnerships confirmed, xAI’s future moves may yet redefine how users engage with event-based predictions, positioning it at the forefront of AI innovation.

Advertisement
Continue Reading

Elon Musk

Elon Musk sends stern warning to Tesla vandals, doubters

Elon Musk sent another warning to vandals that have attacked Tesla for political reasons.

Published

on

NORAD and USNORTHCOM Public Affairs, Public domain, via Wikimedia Commons

Elon Musk has sent a stern warning to Tesla vandals, doubters, and attackers, who have subjected the company and its owners to political violence through arson and other modes of retaliation.

Over the past few months, Tesla showrooms and vehicles have been hit with numerous attacks from those who have opposed Musk and his political involvement with the Trump Administration. Although Musk has stepped back from his role within government significantly since the start of May, the company is still looked at as a political target.

While the White House has put a clear-cut line on the acts, calling them domestic terrorism and holding those responsible for the damage they have done, there are still numerous and daily instances of keying cars or worse.

Yesterday, Musk continued to send stern warnings to those who oppose Tesla and choose to handle their distaste for the company with violence and vandalism. In a Bloomberg interview at the Qatar Economic Forum, Musk was asked if he took what has happened to Tesla “over the past few months personally.”

Musk replied simply but sternly: “Yes.”

He went on to say that not only will those who vandalized the company and its products owned by consumers be held to the fullest extent of the law, but also those who fund it.

Musk also said during a CNBC interview yesterday that very few people buy a company’s products because of the CEO’s political beliefs, and many people do not even know where those CEOs stand on various social issues.

Although Musk has gone out of his way to be transparent about his beliefs, he has a valid point. He obviously felt that, because of his influence, he held a duty to uphold American values and protect what he felt was an attack on free speech and human rights.

Disagreeing with Musk and his political stances is totally reasonable, but damaging products that consumers bought from his companies is not impacting him directly. Instead, it is making consumers’ lives more difficult.

Continue Reading

Trending