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Space News & Blog Articles
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A Merger Completely Shut Down Star Formation
What’s the recipe for forming stars? Yep, lots of gas and dust. Galaxies rich in these materials get to make a lot of stars. When the supply runs out, star formation stops. That’s what’s happened in the galaxy SDSS J1448+1010, but there’s a twist. The galaxy didn’t stop making stars because it made so many it ran out of material. No, that happened because it merged with another galaxy. That action flung most of the available gas and dust out of the galaxy entirely. Essentially, the galaxy to went “dormant” and ceased star-forming operations.
Asteroid hunters worry megaconstellations might interfere with planetary defense
A recent survey of planetary defense experts reveals concern about the growing number of artificial satellites in low Earth orbit.
NASA's tiny CAPSTONE moon probe gets nearly 1 million miles from Earth
CAPSTONE reached its farthest point from Earth on Friday afternoon (Aug. 26), getting a whopping 951,908 miles (1,531,948 kilometers) from its home planet.
Cosmic 'tug-of-war' between galaxies created a tidal tail of whipped-away stars
New observations from ALMA and Hubble show the after-effects of a galactic merger — a tremendous 'tail' of gas and stars extending from a massive early galaxy.
Second try for the Artemis I Moon flight
Teams are moving forward to the Moon with a second launch attempt of the Artemis I mission on Saturday, 3 September. The two-hour launch window starts at 20:17 CEST (19:17 BST).
Gear up with Celestron and make the most of this year's Jupiter opposition
Make sure you're ready for this year's extra special Jupiter opposition with specialist kit from Celestron.
Gear up with Celestron and make the most of this year's Jupiter opposition
Make sure you're ready for this year's extra special Jupiter opposition with specialist kit from Celestron.
Chaotic crust contains clues to Mars’ watery past
Mars Express takes us over the Holden Basin – part of a region that is a high-ranking target in the search for signs of past life on the Red Planet. This image was taken on 24 April 2022 by the spacecraft’s High Resolution Stereo Camera.
Problem Solved! Voyager 1 is no Longer Sending Home Garbled Data!
Earlier this year, the teams attached to the Voyager 1 mission noticed that the venerable spacecraft was sending weird readouts about its attitude articulation and control system (called AACS, for short). The data it’s providing didn’t really reflect what was actually happening onboard. That was the bad news. The good news was that it didn’t affect science data-gathering and transmission. And, the best news came this week: team engineers have fixed the issue with the AACS and the data are flowing normally again.
What is ISRU, and How Will it Help Human Space Exploration?
As Artemis 1 prepares for its maiden launch with the goal of putting astronauts back on the Moon’s surface within the next few years, the next question is how will astronauts live and survive its surface? Will we constantly ferry all the necessary supplies such as water and food from Earth, or could astronauts learn to survive on their own? These are questions that a discipline known as ISRU hopes to answer both now and in the years to come. But what is ISRU, and how will it help advance human space exploration as we begin to slowly venture farther away from the only home we’ve ever known?
NASA now aims to launch Artemis 1 moon mission on Sept. 3 after glitch
NASA is now targeting Saturday (Sept. 3) for the launch of Artemis 1, whose first liftoff attempt on Monday (Aug. 29) was scuttled by a technical issue.
NASA targets Saturday for next moon rocket launch attempt
STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION
NASA’s Space Launch System moon rocket on pad 39B at the Kennedy Space Center. Credit: NASA/Sam LottNASA will make a second attempt to launch the agency’s giant Space Launch System rocket Saturday on a delayed test flight to send an unpiloted Orion crew capsule on a flight around the moon and back, a major milestone in the agency’s ambitious Artemis program.
Grounded Monday by trouble cooling one of the rocket’s four shuttle-era engines to the required pre-start temperature, managers said Tuesday engineers have come up with a work-around and plan to start a fresh countdown at 4:07 p.m. EDT Thursday.
That will set the stage for blastoff on the Artemis 1 mission at 2:17 p.m. Saturday, one day later than NASA’s original backup launch date. As always, NASA will have to work around the weather, with forecasters predicting a 60 percent chance of stormy conditions during the rocket’s two-hour launch window.
Mike Sarafin, chairman of NASA’s mission management team, said the core stage fueling procedure will be adjusted in an attempt to improve cooling to all four RS-25 engines. In addition, fittings will be tightened around a fuel-line umbilical at the base of the rocket to improve sealing and prevent leaks like one that briefly occurred Monday.
“We agreed on what was called ‘option 1,’ which was to operationally change the (fuel) loading procedure and start our engine chilldown earlier,” Sarafin said. “We also agreed to do some work at the pad to address the leak that we saw at the hydrogen tail service mast umbilical.
“And we also agreed to move our launch date to Saturday. We are going to reconvene the Mission Management Team on Thursday to review our flight rationale and our overall readiness.”
The 322-foot-tall 5.75-million-pound SLS is the most powerful rocket ever built by NASA, generating 8.8 million pounds of thrust at liftoff using four Aerojet Rocketdyne RS-25 engines left over from the shuttle program and two Northrop Grumman solid rocket boosters attached to a Boeing-built core stage.
Accelerating to 70 mph — straight up — in just seven seconds, the the SRBs and the core stage will boost the Orion capsule, carrying instrumented test dummies and a suite of sensors and experiments, into an elliptical orbit. The rocket’s upper stage, provided by United Launch Alliance, then will propel the capsule out of Earth’s gravity and onto a trajectory to the moon.
After a close flyby, the capsule will whip around the moon and out into a distant orbit that will carry it farther from Earth than any human-rated spacecraft. Then, after another lunar flyby, the ship will head back to Earth for splashdown in the Pacific Ocean west of San Diego on October 11.
The goal of the Artemis 1 mission is to put the SLS rocket and the Orion spacecraft through their paces, including a high-speed, high-temperature re-entry, before launching four astronauts around the moon in late 2024. The first Artemis moon landing is planned for the 2025-26 timeframe.
Given the constantly changing positions of the Earth and moon, along with the rocket’s ability to reach the correct trajectory, NASA must launch the Artemis 1 mission within specific “windows.”
Complicating the picture, the battery used by the upper stage’s self-destruct system must be serviced after 25 days, and that can only be done back in NASA’s Vehicle Assembly Building.
That means the Artemis 1 mission must get off the ground by Monday or the rocket will be hauled back to the VAB, delaying another launch attempt until late September at the earliest or, more likely, to October.
The SLS rocket is the key to the Artemis program and NASA managers and engineers want to make sure it works as planned before launching astronauts to the moon.
A full-duration eight-minute core stage engine test firing was carried out at the Stennis Space Center in Mississippi on March 18, 2021. The rocket then was shipped to the Kennedy Space Center for launch processing.
NASA carried out a dress-rehearsal countdown and fueling test on April 3, a key milestone needed to make sure the rocket, launch pad and ground systems work together as planned. But engineers ran into a series of mostly ground-system problems that prevented them from loading propellants,
Two more fueling attempts failed on April 4 and 14 due to a variety of unrelated problems. Engineers were finally able to fully load the core stage on June 20, but only after a leaking quick-disconnect fitting was isolated that prevented the flow of hydrogen coolant to the core stage engines — a requirement for an actual launch.
The quick-disconnect was repaired back in the Vehicle Assembly Building and the SLS rocket was rolled back out to pad 39B on August 16 to ready the vehicle for launch.
During Monday’s launch attempt, the repaired quick-disconnect appeared to work normally. With the core stage tanks filled and topped off, liquid oxygen and hydrogen began circulating through the engine plumbing to condition them to the ultra-low temperatures of the propellants.
But none of the engines reached the target temperature of -420 degrees Fahrenheit. Engines 1, 2 and 4 got to about -410 degrees while engine No. 3 only reached about -380 degrees. During troubleshooting, engineers diverted all the hydrogen coolant to engine 3 and it still did not reach the planned operating temperature.
John Honeycutt, manager of the SLS program at the Marshall Spaceflight Center, said engineers suspect a faulty sensor might be responsible for the readings from engine 3. Pressure measurements and other data indicate good cooling.
“The way the sensor is behaving, it doesn’t line up with the physics of the situation,” he said. “And so we will be looking at all the other data that we have to use it to make an informed decision whether or not we’ve got all the engines chilled down or not.”
By starting the chilldown procedure about 45 minutes earlier when the engines are near ambient temperatures, engineers believe they can manage to cool all four engines as needed.
A similar procedure was used during the rocket’s test firing last year at the Stennis Space Center. In that case, the engines were properly cooled and started normally for a full-duration “green run.”
“As of today, and based on the data that we’ve got, we think we can do something like what we did at the Stennis Space Center to put ourselves in a better position for launch,” said Honeycutt.
As Sarafin said, the team will review all the data Thursday before giving final clearance to proceed with a launch attempt.
“The team is in the middle of poring through the data and building the flight rationale,” Honeycutt said. “I don’t have that just yet, but I do expect us to be able to get there.”
Live coverage: SpaceX launches more Starlink satellites from California
Live coverage of the countdown and launch of a Falcon 9 rocket from Vandenberg Space Force Base in California with 46 Starlink internet satellites. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
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NASA Will Try Again on September 3 For First Launch of Artemis
After reviewing the data from Monday’s scrubbed launch attempt for the Space Launch System/Artemis- 1 test flight, NASA’s Mission Management Team feels the rocket and the launch team will be ready for another try at the program’s maiden launch on Saturday, September 3. The two-hour launch window starts at 2:17 pm EDT (18:17 UTC).
Science Fiction was an Inspiration for Many Professional Astronomers
What do MINBAR, TARDIS, Cardassian Expansion, BoRG, DS9, Tatooines, and ACBAR all have in common? They’re names of astronomical surveys and software created by astronomers who say that science fiction (SF) influenced their careers. Those names are just one indicator of widespread interest in SF in the science community. It’s not surprising considering how many scientists (and science writers) grew up with the genre.
SpaceX Starlink satellites will service Royal Caribbean cruise ships
Cruise ships will use SpaceX satellites to boost their Internet and wifi speed, in a shot across the bow to competitor OneWeb.
NASA solves Voyager 1 data glitch mystery, but finds another
Voyager 1 is once again beaming back clear telemetry data on its status beyond our solar system, solving one mystery and leading to another.
What's your zodiac sign? (It may not be what you think it is)
On the surface, the determination of a zodiac sign seems devilishly simple. As the Earth orbits around the sun, our star appears in front of different constellations.
Watch Jeff Bezos' Blue Origin launch science mission on Wednesday
Blue Origin plans to launch its next space mission on Wednesday morning (Aug. 31), and you can watch the uncrewed action live.
Particle physics
Read the latest news about particle physics.
