adplus-dvertising
Connect with us

Science

NASA readies for its 3rd attempt to launch rocket to the moon tomorrow morning – CBC News

Published

 on


Here we go again. 

After two scrubbed launch attempts and two hurricanes that pounded the Space Coast, NASA is once again trying to get its giant moon rocket off the ground.

Artemis I, the first mission in NASA’s Artemis program that will return astronauts to the moon, is scheduled to liftoff on Wednesday at 1:04 a.m. ET, with a two-hour launch window. 

300x250x1

You can watch the launch here beginning at 12:30 a.m.

The Space Launch System is the space agency’s most powerful rocket ever built. Atop it sits the Orion spacecraft, which will one day ferry astronauts to and from the moon. The last time humans were on the moon was in December 1972.

This is an uncrewed mission, with the only passengers being three mannequins on board that are part of a few experiments, including testing a vest that will protect astronauts from lethal space radiation. 

Artemis II, set to launch in 2024, will carry four astronauts — including a Canadian — who will orbit the moon and return to Earth.

Artemis III, set to launch in 2025, will see humans once again on the surface of the moon.

But trying to get the Artemis mission up and going has been quite the challenge for NASA.

Originally, the rocket was supposed to launch on Aug. 29. However, the space agency encountered several issues that day, including a delay in loading the rocket’s propellant due to stormy weather. Then the two types of propellants — liquid oxygen and liquid hydrogen — weren’t loading at acceptable rates. Finally, one of the four rocket engines failed to cool down as expected, and eventually crews ran out of time in the launch window and were forced to scrub the launch.

A second launch attempt on Sept. 3 was also scrubbed due to fuel loading issues and a hydrogen leak.

Then came the hurricanes.

First, it was Hurricane Ian that forced NASA to roll the rocket back to the Vehicle Assembly Building. The hurricane made landfall from the Gulf of Mexico on Sept. 28 as a Category 4 storm and, though it did not cause extensive damage at the Kennedy Space Center, the space agency wanted to inspect the pad and allow its workers time to take care of themselves, which further delayed the launch.

Then there was Hurricane Nicole, which made landfall on Nov. 10 just south of the Kennedy Space Center as a Category 1 storm. NASA had rolled the rocket back to the launch pad on Nov. 4 for a launch on Nov. 14. Once Nicole had developed, however, it was too late to roll the 32-storey rocket back to the safety of the assembly building, so the rocket remained on the pad during the storm, and the launch date was moved to Nov. 16.

The rocket did experience some issues from being left in the storm.

One was some tearing of some thin caulking that surrounds Orion, which essentially fills in the gaps in the thicker insulation and prevents any air circulation or heating. There was concern that if more of it were to break off during launch, it could damage the rocket, potentially catastrophically. 

This image shows a close-up of the area where caulk on a seam between the Orion launch abort system’s ogive and crew module adapter detached during Hurricane Nicole. (NASA)

Another concern was the tail service mast umbilical. This 10-metre tall structure lies near the bottom of the rocket and consists of several lines that feed propellant and electricity to the core stage of the rocket. Engineers were receiving “inconsistent” data, even though they had replaced one of the connectors earlier. 

Ground crew can be seen at the base of NASA’s massive Space Launch Systemrocket, inspecting the tail service mast umbilical, left. In a media teleconference on Sunday, Mike Sarafin, mission manager for Artemis, said the area did ‘have a problem’ after Hurricane Nicole struck Florida last week. (Don Hladiuk)

Despite these issues, in a media teleconference on Monday evening, mission managers said they were confident that they could still fly.

“There’s no change in our plan to launch on the 16th,” said Artemis mission manager Mike Sarafin.  “In terms of the two issues that we reviewed … I would say we’re comfortable flying as is.”

The reasoning is that, for the mast umbilical, there are redundant systems in place. As for the caulking, they reviewed it and believe that no more would break off, and even if it did, there would be a low chance it would be a catastrophic risk to the rocket.

Sarafin noted that the same caulking was used in flight for the original test flight of the Orion spacecraft, and they did not see any issues of it detaching.

When it comes to the possibility of yet another leak during the propellant load, Jeremy Parsons, exploration ground systems program deputy manager at the Kennedy Space Center, said they aren’t concerned they will encounter the previous issues.

“We are more confident than we’ve ever been in our loading procedures,” he said.

The hours-long tanking will begin at 3:30 p.m. ET Tuesday. 

If the rocket launches Wednesday, Orion will have a 26-day mission to test multiple systems, including most importantly, a new heat shield that is designed to protect astronauts from heat as they re-enter the atmosphere at nearly 40,000 km/h.

This graphic shows the mission timeline for the uncrewed Artemis I mission. (NASA)

Overall, the feeling is positive at the space agency that they are ready to overcome any other challenges that may develop along the way. Parsons noted that the entire team has persevered through a lot trying to get Artemis to launch. 

Sarafin agreed.

“Our time is coming, and we hope that is on Wednesday,” Sarafin said. “But if Wednesday is not the right day, we will take that next hurdle, that next trial and persevere through that.”

Adblock test (Why?)

728x90x4

Source link

Continue Reading

Science

iN PHOTOS: Nature lovers celebrate flora, fauna for Earth Day in Kamloops, Okanagan | iNFOnews | Thompson-Okanagan's News Source – iNFOnews

Published

 on



This frog was spotted in a pond in the Kamloops area.
Image Credit: SUBMITTED/ Lyn MacDonald

300x250x1

Photographers are sharing their favourite photos of flora and fauna captured in Kamloops and the Okanagan in celebration of Earth Day.

First started in the United States in the 70s, the special day on April 22 continues to be acknowledged around the globe. It’s a day to celebrate the planet and a reminder of the need for environmental conservation and sustainability, according to EarthDay.org.

These stunning nature photos show life in ponds and forests, in skies and on mountains, capturing the beauty and wonder of our local natural environments.

Area photographers shared some of their favourite finds and artistic captures. From frogs to flowers, the great outdoors is teeming with life. 

If you have nature photos you want to share, send them to news@infonews.ca.

The sun is touching the closed petals of a flower in Pinantan Lake near Kamloops.

The sun is touching the closed petals of a flower in Pinantan Lake near Kamloops.
Image Credit: SUBMITTED/ Patricia Hanson
This Great Grig was recently spotted in Penticton.

This Great Grig was recently spotted in Penticton.
Image Credit: SUBMITTED/ Luka Bevanda
 A snail appears to look at its reflection in a pond in the Slocan Valley.

A snail appears to look at its reflection in a pond in the Slocan Valley.
Image Credit: SUBMITTED/ Lyn MacDonald
A mother and baby coot paddle on a lake in Salmon Arm.

A mother and baby coot paddle on a lake in Salmon Arm.
Image Credit: SUBMITTED/ Grant Cruickshank
A wildflower bursts with colour in the South Thompson.

A wildflower bursts with colour in the South Thompson.
Image Credit: SUBMITTED/ Ann Steenhuysen
These pink flowers look like a string of decorations in Kamloops.

These pink flowers look like a string of decorations in Kamloops.
Image Credit: SUBMITTED/ Lyn MacDonald
A Townsend's Solitaire swoops into the air at Tunkwa Lake near Savona.

A Townsend’s Solitaire swoops into the air at Tunkwa Lake near Savona.
Image Credit: SUBMITTED/ Valerie Walsh
This flower in Kelowna is covered with raindrops.

This flower in Kelowna is covered with raindrops.
Image Credit: SUBMITTED/ Wendy Eiler

To contact a reporter for this story, email Shannon Ainslie or call 250-819-6089 or email the editor. You can also submit photos, videos or news tips to the newsroom and be entered to win a monthly prize draw.

We welcome your comments and opinions on our stories but play nice. We won’t censor or delete comments unless they contain off-topic statements or links, unnecessary vulgarity, false facts, spam or obviously fake profiles. If you have any concerns about what you see in comments, email the editor in the link above. SUBSCRIBE to our awesome newsletter here.

News from © iNFOnews, 2024

iNFOnews

Adblock test (Why?)

728x90x4

Source link

Continue Reading

Science

An extra moon may be orbiting Earth — and scientists think they know exactly where it came from – Livescience.com

Published

 on


A fast-spinning asteroid that orbits in time with Earth may be a wayward chunk of the moon. Now, scientists think they know exactly which lunar crater it came from.

A new study, published April 19 in the journal Nature Astronomy, finds that the near-Earth asteroid 469219 Kamo’oalewa may have been flung into space when a mile-wide (1.6 kilometers) space rock hit the moon, creating the Giordano Bruno crater.

Kamo’oalewa’s light reflectance matches that of weathered lunar rock, and its size, age and spin all match up with the 13.6-mile-wide (22 km) crater, which sits on the far side of the moon, the study researchers reported.

300x250x1

China plans to launch a sample-return mission to the asteroid in 2025. Called Tianwen-2, the mission will return pieces of Kamo’oalewa about 2.5 years later, according to Live Science’s sister site Space.com.

“The possibility of a lunar-derived origin adds unexpected intrigue to the [Tianwen-2] mission and presents additional technical challenges for the sample return,” Bin Cheng, a planetary scientist at Tsinghua University and a co-author of the new study, told Science.

Related: How many moons does Earth have?

Kamo’oalewa was discovered in 2016 by researchers at Haleakala Observatory in Hawaii. It has a diameter of about 100 to 200 feet (approximately 30 to 60 meters, or about the size of a large Ferris wheel) and spins at a rapid clip of one rotation every 28 minutes. The asteroid orbits the sun in a similar path to Earth, sometimes approaching within 10 million miles (16 million km).

window.sliceComponents = window.sliceComponents || ;

externalsScriptLoaded.then(() => {
window.reliablePageLoad.then(() => {
var componentContainer = document.querySelector(“#slice-container-newsletterForm-articleInbodyContent-UG4KJ7zrhxAytcHZQxVzXK”);

if (componentContainer)
var data = “layout”:”inbodyContent”,”header”:”Sign up for the Live Science daily newsletter now”,”tagline”:”Get the worldu2019s most fascinating discoveries delivered straight to your inbox.”,”formFooterText”:”By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.”,”successMessage”:”body”:”Thank you for signing up. You will receive a confirmation email shortly.”,”failureMessage”:”There was a problem. Please refresh the page and try again.”,”method”:”POST”,”inputs”:[“type”:”hidden”,”name”:”NAME”,”type”:”email”,”name”:”MAIL”,”placeholder”:”Your Email Address”,”required”:true,”type”:”hidden”,”name”:”NEWSLETTER_CODE”,”value”:”XLS-D”,”type”:”hidden”,”name”:”LANG”,”value”:”EN”,”type”:”hidden”,”name”:”SOURCE”,”value”:”60″,”type”:”hidden”,”name”:”COUNTRY”,”type”:”checkbox”,”name”:”CONTACT_OTHER_BRANDS”,”label”:”text”:”Contact me with news and offers from other Future brands”,”type”:”checkbox”,”name”:”CONTACT_PARTNERS”,”label”:”text”:”Receive email from us on behalf of our trusted partners or sponsors”,”type”:”submit”,”value”:”Sign me up”,”required”:true],”endpoint”:”https://newsletter-subscribe.futureplc.com/v2/submission/submit”,”analytics”:[“analyticsType”:”widgetViewed”],”ariaLabels”:;

var triggerHydrate = function()
window.sliceComponents.newsletterForm.hydrate(data, componentContainer);

if (window.lazyObserveElement)
window.lazyObserveElement(componentContainer, triggerHydrate);
else
triggerHydrate();

}).catch(err => console.log(‘Hydration Script has failed for newsletterForm-articleInbodyContent-UG4KJ7zrhxAytcHZQxVzXK Slice’, err));
}).catch(err => console.log(‘Externals script failed to load’, err));

Follow-up studies suggested that the light spectra reflected by Kamo’oalewa was very similar to the spectra reflected by samples brought back to Earth by lunar missions, as well as to meteorites known to come from the moon.

Cheng and his colleagues first calculated what size object and what speed of impact would be necessary to eject a fragment like Kamo’oalewa from the lunar surface, as well as what size crater would be left behind. They figured out that the asteroid could have resulted from a 45-degree impact at about 420,000 mph (18 kilometers per second) and would have left a 6-to-12-mile-wide (10 to 20 km) crater.

There are tens of thousands of craters that size on the moon, but most are ancient, the researchers wrote in their paper. Near-Earth asteroids usually last only about 10 million years, or at most up to 100 million years before they crash into the sun or a planet or get flung out of the solar system entirely. By looking at young craters, the team narrowed down the contenders to a few dozen options.

The researchers focused on Giordano Bruno, which matched the requirements for both size and age. They found that the impact that formed Giordano Bruno could have created as many as three still-extant Kamo’oalewa-like objects. This makes Giordano Bruno crater the most likely source of the asteroid, the researchers concluded.

“It’s like finding out which tree a fallen leaf on the ground came from in a vast forest,” Cheng wrote on X, formerly known as Twitter.

Confirmation will come after the Tianwen-2 mission brings a piece of Kamo’oalewa back to Earth. Scientists already have a sample of what is believed to be ejecta from Giordano Bruno crater in the Luna 24 sample, a bit of moon rock brought back to Earth in a 1976 NASA mission. By comparing the two, researchers could verify Kamo’oalewa’s origin.

Editor’s note: This article’s headline was updated on April 23 at 10 a.m. ET.

Adblock test (Why?)

728x90x4

Source link

Continue Reading

Science

"Hi, It's Me": NASA's Voyager 1 Phones Home From 15 Billion Miles Away – NDTV

Published

 on



<!–

–>

Launched in 1977, Voyager 1 was mankind’s first spacecraft to enter the interstellar medium

Washington, United States:

300x250x1

NASA’s Voyager 1 probe — the most distant man-made object in the universe — is returning usable information to ground control following months of spouting gibberish, the US space agency announced Monday.

The spaceship stopped sending readable data back to Earth on November 14, 2023, even though controllers could tell it was still receiving their commands.

In March, teams working at NASA’s Jet Propulsion Laboratory discovered that a single malfunctioning chip was to blame, and devised a clever coding fix that worked within the tight memory constraints of its 46-year-old computer system.

window._rrCode = window._rrCode || [];_rrCode.push(function() (function(v,d,o,ai)ai=d.createElement(“script”);ai.defer=true;ai.async=true;ai.src=v.location.protocol+o;d.head.appendChild(ai);)(window, document, “//a.vdo.ai/core/v-ndtv/vdo.ai.js”); );

“Voyager 1 spacecraft is returning usable data about the health and status of its onboard engineering systems,” the agency said.

“The next step is to enable the spacecraft to begin returning science data again.”

Launched in 1977, Voyager 1 was mankind’s first spacecraft to enter the interstellar medium, in 2012, and is currently more than 15 billion miles from Earth. Messages sent from Earth take about 22.5 hours to reach the spacecraft.

Its twin, Voyager 2, also left the solar system in 2018.

Both Voyager spacecraft carry “Golden Records” — 12-inch, gold-plated copper disks intended to convey the story of our world to extraterrestrials.

These include a map of our solar system, a piece of uranium that serves as a radioactive clock allowing recipients to date the spaceship’s launch, and symbolic instructions that convey how to play the record.

The contents of the record, selected for NASA by a committee chaired by legendary astronomer Carl Sagan, include encoded images of life on Earth, as well as music and sounds that can be played using an included stylus.

window._rrCode = window._rrCode || [];_rrCode.push(function(){ (function(d,t) var s=d.createElement(t); var s1=d.createElement(t); if (d.getElementById(‘jsw-init’)) return; s.setAttribute(‘id’,’jsw-init’); s.setAttribute(‘src’,’https://www.jiosaavn.com/embed/_s/embed.js?ver=’+Date.now()); s.onload=function()document.getElementById(‘jads’).style.display=’block’;s1.appendChild(d.createTextNode(‘JioSaavnEmbedWidget.init(a:”1″, q:”1″, embed_src:”https://www.jiosaavn.com/embed/playlist/85481065″,”dfp_medium” : “1”,partner_id: “ndtv”);’));d.body.appendChild(s1);; if (document.readyState === ‘complete’) d.body.appendChild(s); else if (document.readyState === ‘loading’) var interval = setInterval(function() if(document.readyState === ‘complete’) d.body.appendChild(s); clearInterval(interval); , 100); else window.onload = function() d.body.appendChild(s); ; )(document,’script’); });

Their power banks are expected to be depleted sometime after 2025. They will then continue to wander the Milky Way, potentially for eternity, in silence.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

Adblock test (Why?)

728x90x4

Source link

Continue Reading

Trending