Science & Technology
NASA capsule flies over Apollo landing sites, heads home

NASA’s Orion capsule and its test dummies swooped one last time around the moon Monday, flying over a couple of Apollo landing sites before heading home, AP reported.
Orion will aim for a Pacific splashdown Sunday off San Diego, setting the stage for astronauts on the next flight in a couple of years.
The capsule passed within 130 kilometers of the far side of the moon, using lunar gravity as a slingshot for the 380,000-kilometer ride back to Earth. It spent a week in a wide, sweeping lunar orbit.
Once emerging from behind the moon and regaining communication with flight controllers in Houston, Orion beamed back photos of a close-up moon and a crescent Earth — Earthrise — in the distance.
“Orion now has its sights set on home,” said Mission Control commentator Sandra Jones.
The capsule also passed over the landing sites of Apollo 12 and 14. But at 1,900 kilometers up, it was too high to make out the descent stages of the lunar landers or anything else left behind by astronauts more than a half-century ago. During a similar flyover two weeks ago, it was too dark for pictures. This time, it was daylight.
Deputy chief flight director Zebulon Scoville said nearby craters and other geologic features would be visible in pictures, but little else.
Science & Technology
Asteroid that could wipe out a city is near, but don’t fear

An asteroid big enough to wipe out a city will zip harmlessly between Earth and the moon’s orbit this weekend, missing both celestial bodies.
Saturday’s close encounter will offer astronomers the chance to study a space rock from just over 100,000 miles (168,000 kilometers) away. That’s less than half the distance from here to the moon, making it visible through binoculars and small telescopes, AP reported.
While asteroid flybys are common, NASA said it’s rare for one so big to come so close — about once a decade. Scientists estimate its size somewhere between 130 feet and 300 feet (40 meters and 90 meters).
Discovered a month ago, the asteroid known as 2023 DZ2 will pass within 320,000 miles (515,000 kilometers) of the moon on Saturday and, several hours later, buzz the Indian Ocean at about 17,500 mph (28,000 kph).
“There is no chance of this ‘city killer’ striking Earth, but its close approach offers a great opportunity for observations,” the European Space Agency’s planetary defense chief Richard Moissl said in a statement.
Astronomers with the International Asteroid Warning Network see it as good practice for planetary defense if and when a dangerous asteroid heads our way, according to NASA.
The Virtual Telescope Project will provide a live webcast of the close approach.
The asteroid won’t be back our way again until 2026. Although there initially seemed to be a slight chance it might strike Earth then, scientists have since ruled that out.
Science & Technology
Launch of 3D-printed rocket ends in failure

A rocket made almost entirely of 3D-printed parts made its launch debut Wednesday night, lifting off amid fanfare but failing three minutes into flight — far short of orbit.
There was nothing aboard Relativity Space’s test flight except for the company’s first metal 3D print made six years ago, The Associated Press reported.
The startup wanted to put the souvenir into a 200-kilometer-high orbit for several days before having it plunge through the atmosphere and burn up along with the upper stage of the rocket.
As it turned out, the first stage did its job following liftoff from Cape Canaveral Space Force Station and separated as planned. But the upper stage appeared to ignite and then shut down, sending it crashing into the Atlantic.
It was the third launch attempt from what once was a missile site. Relativity Space came within a half-second of blasting off earlier this month, with the rocket’s engines igniting before abruptly shutting down.
Although the upper stage malfunctioned and the mission did not reach orbit, “maiden launches are always exciting and today’s flight was no exception,” Relativity Space launch commentator Arwa Tizani Kelly said after Wednesday’s launch.
Most of the 33-meter rocket, including its engines, came out of the company’s huge 3D printers in Long Beach, California.
Relativity Space said 3D-printed metal parts made up 85% of the rocket, named Terran. Larger versions of the rocket will have even more and also be reusable for multiple flights.
Other space companies also also rely on 3D-printing, but the pieces make up only a small part of their rockets.
Founded in 2015 by a pair of young aerospace engineers, Relativity Space has attracted the attention of investors and venture capitalists.
Science & Technology
TikTok hits 150 mln U.S. monthly users, up from 100 million in 2020

TikTok said on Monday the short-video sharing app now has 150 million monthly active users in the United States, up from 100 million it said it had in 2020, Reuters reported.
The Chinese-owned app confirmed the figure ahead of TikTok CEO Shou Zi Chew’s testimony set for Thursday before the House Energy and Commerce Committee.
On Friday, six more U.S. senators backed bipartisan legislation to give President Joe Biden new powers to ban TikTok on national security grounds. Last week, TikTok said the Biden administration demanded that its Chinese owners divest their stake in the app or it could face a U.S. ban.
The app faces growing pressure in Washington including calls to ban the app by many in Congress who fear its U.S. user data could fall into the hands of China’s government. TikTok said in September 2021 that globally it had more than 1 billion monthly users.
Senate Intelligence Committee chair Mark Warner, who is cosponsoring legislation to give the administration more powers to ban TikTok, said at a Christian Science Monitor breakfast that he did not think TikTok U.S. data was safe.
“This notional idea that the data can be made safe under (Chinese Communist Party) law, just doesn’t, doesn’t pass the smell test.”
TikTok said it has spent more than $1.5 billion on rigorous data security efforts, rejects spying allegations and said “if protecting national security is the objective, divestment doesn’t solve the problem: a change in ownership would not impose any new restrictions on data flows or access.”
The new figures are a sign of the app’s wide popularity especially among younger Americans. Commerce Secretary Gina Raimondo told Bloomberg News there could be political ramifications to banning TikTok. “The politician in me thinks you’re gonna literally lose every voter under 35, forever,” she said.
According to Reuters some TikTok content creators will come to Washington this week to make the case why the app should not be banned.
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