Tag Archives: Asteroid

Astronomy News

Osiris-Rex Successful Mission to Bennu

Osiris-Rex Successful Mission to Bennu

Bennu is an asteroid that could threaten the Earth, though the possibility is a narrow one. Still, a wise move to find out what it is made of, just in case we need to eliminate it sometime in the future. Besides that, the always important question: what are WE made of, what are the prime building blocks of our solar system? Asteroids are untouched remnants of the solar system’s formation.

Canada provided the instruments that made asteroid Bennu the most completely measured asteroid so far, and therefore will receive a portion of the sample for study. https://www.asc-csa.gc.ca/eng/satellites/osiris-rex/canadas-role.asp

The BBC has the story from the launch of the mission to the arrival at NASA, with videos here: https://www.bbc.com/news/av/science-environment-66907727

And of course the NASA site is a veritable rabbit hole, pictures, simulations, videos. https://www.nasa.gov/osiris-rex

But this isn’t the end of the story! OSIRIS-REx is now headed back out toward another asteroid. The spacecraft will arrive at Apophis in April 2029, around when the asteroid is expected to encounter Earth.  A few years ago, Apophis was discovered to be on an actual collision course, which was the cause of a lot of excitement, but follow-up studies have it narrowly missing us. Whew! Good idea to learn about its composition. —Cathy

READ ALL ABOUT IT! NASA: https://www.nasa.gov/osiris-rex

CBC: An asteroid treasure box lands on Earth on Sunday — and Canada will get a piece of it

Canada played crucial role in OSIRIS-REx mission that collected asteroid fragments

Nicole Mortillaro · CBC News ·
This image shows a rocky walnut-shaped asteroid named Bennu.
After a seven-year mission to the asteroid Bennu, seen here, NASA’s OSIRIS-REx spacecraft is set to drop off its samples on Sunday. (NASA/Goddard/University of Arizona/CSA/York/MDA/The Associated Press)

A spacecraft that has travelled more than 950 million kilometres is dropping off a care package on Sunday: samples from an asteroid that lies more than 100 million kilometres from Earth.

NASA’s OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer) launched in 2016 destined for an asteroid named Bennu. Its main mission: to stick an arm out, “high-five” the asteroid and then vacuum up some of the debris, referred to as “touch and go.”

It successfully did so in 2020. Now, the rocky samples — roughly 250 grams in total, the largest ever to return to Earth — are on their way to be studied by science teams, including those from Canada.

That’s thanks to our contribution of the OSIRIS-REx Laser Altimeter (OLA), an instrument that mapped out the asteroid in 3D in order to find a good place for the sample collection.

READ More: https://www.cbc.ca/news/science/osiris-rex-sample-return-1.6974159

BBC: Asteroid Bennu: Why the return of samples is so important… in 83 seconds

A capsule carrying precious samples from asteroid Bennu landed on Earth on Sunday.

Nasa scientists hope the material could give hints to how life here began.

BBC Science editor Rebecca Morelle explains why the samples are so important.

Read more: Nasa hails ‘awesome’ recovery of asteroid sample

Astronomy News

HAARP IS PINGING AN ASTEROID TODAY

From https://spaceweather.com/

HAARP IS PINGING AN ASTEROID TODAY: Researchers from NASA and the University of Alaska are about to perform an unusual radar experiment. They’re going to ping a near-Earth asteroid using shortwave radio. The target is a 500-ft-wide space rock named “2010 XC15.” When it passes by Earth on Tuesday, Dec. 27th, the HAARP array in Alaska will hit it with a long pulse of 9.6 MHz radio waves.

The High-frequency Active Auroral Research Program (HAARP) site in Gakona, Alaska

Radio astronomers ping asteroids all the time. What’s unusual about this experiment is the frequency: 9.6 MHz is hundreds of times lower than typical S-band and X-band frequencies used by other asteroid radars. The goal is to probe the asteroid’s interior.

Lead investigator Mark Haynes of the Jet Propulsion Laboratory (JPL) explains: “The low frequencies we are using can penetrate the asteroid, unlike S-band or X-band frequencies which reflect mostly off of the surface. Ultimately the idea is to use echoes to form tomographic images of asteroid interiors.”

Knowing the internal structure of an asteroid could come in handy — especially if you need to destroy it. 2010 XC15 poses no threat 770,000 km from Earth. Tomorrow’s experiment is proof-of-concept for a scarier object: Asteroid Apophis, which will buzz Earth closer than many satellites on April 13, 2029. If shortwave asteroid radar works for 2010 XC15, it should work for Apophis, too, giving planetary defense experts key data about the asteroid’s vulnerabilities.

The OVRO Long Wavelength Array near Bishop, CA, will receive echoes from HAARP’s transmission

HAARP will transmit a continually chirping signal to asteroid 2010 XC15 at slightly above and below 9.6 MHz. The chirp will repeat at two-second intervals. The University of New Mexico Long Wavelength Array near Socorro, NM, and the Owens Valley Radio Observatory Long Wavelength Array near Bishop, CA, will receive the reflected signal.

“This will be the lowest frequency asteroid radar observation ever attempted,” notes Lance Benner, a co-investigator from JPL. If the experiment works it could mark a significant advance in asteroid radar. Stay tuned!

Astronomy News

GROUND-BASED IMAGES OF ASTEROID IMPACT

Space Weather News for Sept. 27, 2022
https://spaceweather.com
https://www.spaceweatheralerts.com

GROUND-BASED IMAGES OF ASTEROID IMPACT: Yesterday, NASA’s DART spacecraft hit asteroid Dimorphos–a dramatic bullseye 11 million kilometers from Earth. Surprising even NASA, ground-based telescopes had no trouble seeing the impact. Professional and amateur astronomers photographed a bright cloud of debris emerging from the battered asteroid. See the photos @ Spaceweather.com

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Above: A cloud of debris emerges from Dimorphos following the DART impact. Credit: Asteroid Terrestrial-impact Last Alert System (ATLAS) in Hawaii

Astronomy News

Asteroid passing by Earth tonight

Visible in a small telescope, or even binoculars from a dark site.

Photos and video of huge asteroid 1994 PC1. It passed Earth safely January 18


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Star chart with constellations and labeled red tick marks around the asteroid.
Asteroid (7482) 1994 PC1 will be in the constellation Pisces on January 18, 2022, the night of closest approach to Earth. Illustration by Eddie Irizarry/ Stellarium.

How to see it with a telescope

Sky enthusiasts using a small telescope pointed at the correct time and location might be able to spot asteroid (7482) 1994 PC1. For North America, observers with backyard telescopes have the best opportunity to see the huge asteroid hours after the January 18 close approach (see charts below). You should be able to detect the space rock’s motion thanks to its size and proximity. When the asteroid is passing close to fixed background stars, the movement will be more noticeable.

Astronomy News

Apophis: The asteroid we thought might hit us

Apophis: The asteroid we thought might hit us

By

Even though the asteroid Apophis won’t hit Earth for at least another century, its scientific impact will be tremendous.

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Asteroid Apophis will fly very close to Earth, but won't hit us for at least 100 years.
Asteroid Apophis will fly very close to Earth, but won’t hit us for at least 100 years. (Image credit: ESA – P.Carril)
 

On Friday, April 13, 2029, Earth will experience a dramatic close encounter with the asteroid 99942 Apophis. The 1,120 feet (340-meter) wide object will pass within just 19,000 miles (31,000 km) of our home planet — a distance that brings it closer than most geostationary satellites.

Thanks to the tremendous size of Apophis, its close-passage will be so bright that around 2 billion people will be able to witness it with the naked eye. First becoming visible in the southern hemisphere, the asteroid  will appear as a bright star streaking across the sky from east to west, initially passing over Australia, then the Indian Ocean, and eventually crossing the equator over Africa.

Fortunately, this spectacular and historic event  won’t be as severe as experts once thought. Initially, scientists were unsure whether the passage of Apophis would result in a collision with Earth.

READ MORE

Astronomy News

Apophis comes near Earth this weekend

Friday 13th in 2029 will be interesting!I remember when the orbit of Apophis was first calculated, it was thought there might be an impact, the asteroid was going to be that close. It is still a possibility, but not yet. Maybe 2068, for those of us still around to worry about it. –CPL

From Space Weather News for March 8, 2021

ASTEROID APOPHIS FLYBY: Mark your calendar: April 13, 2029. On that Friday the 13th eight years from now, asteroid 99942 Apophis will fly past Earth so close you can see it with your naked eye. No, it won’t hit, but you can be excused a frisson of dread watching it pass by.This weekend, Apophis made a “pre-flyby” of Earth about 16 million km away, the closest it will be before the big event in 2029. Alberto Quijano Vodniza of Pasto, Colombia video-recorded the space rock on March 7th:“I used a 14-inch Celestron telescope to capture these images, which show the asteroid’s motion in about 10 minutes,” he explains.Asteroid Apophis is about 370 meters wide. That’s big enough to punch through Earth’s atmosphere, devastating a region the size of, say, Texas, if it hit land, or causing widespread tsunamis if it hit ocean.Fortunately, Apophis will not hit Earth in 2029. Back in 2004 when the asteroid was first discovered, astronomers thought there might be a collision. Improved observations of Apophis’s orbit have since ruled out a strike. The asteroid will skim Earth’s belt of geosyncronous satellites, but come no closer than 31,900 km to Earth itself. Observations in the past year have reduced the uncertainty of the flyby distance to ±20 km.
Above: Apophis skimming the geosynchronous satellite belt in 2029. Credit: NASAWhat might happen anyway is pretty interesting. At such close range, Earth’s gravity could stretch the asteroid, change the way it spins, and trigger small avalanches. Radar observations during the hours of closest approach will be able to image the asteroid’s surface with few-meter resolution, potentially revealing the changes.Shining like a 3rd magnitude star, Apophis will be plainly visible to the naked eye from rural areas and an easy (albeit fast-moving) target for small telescopes. No one in recorded history has ever seen an asteroid in space so bright.NASA, China, the Planetary Society and others are planning or contemplating missions to Apophis. The more we know about it the better. The next two flybys in 2029 and 2036 are safe, but analysts still haven’t completely ruled out a low-probability impact in 2068.More amateur images of Apophis:from Milan Antos of Jablonec nad Nisou, Czech Republic; from William Wiethoff of Port Wing, Wisconsin; from Robert Forrest of Market Harborough, UK

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Astronomy News

OSIRIS-REx touchdown on Bennu video

Watch the OSIRIS-REx touchdown on Bennu video

https://www.planetary.org/video/osiris-rex-touchdown-on-bennu-video

From the Planetary Society:
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This video shows 82 images captured as NASA’s OSIRIS-REx spacecraft touched the surface of asteroid Bennu to collect a sample on 20 October 2020. The sample head touches Bennu’s surface for 6 seconds while a bottle of nitrogen gas stirs rocks and soil into a collector. The spacecraft then backs away using its thrusters, as debris fills the camera view.

Astronomy News

SMALL ASTEROID EXPLODES OVER CANADA

SMALL ASTEROID EXPLODES OVER CANADA: Material from the asteroid belt landed on Earth yesterday, July 24th, when a small space rock exploded over Ontario, Canada. The resulting fireball was a bright as a full Moon and probably scattered meteorites over the countryside near the town of Bancroft, Ontario. Now the hunt is on for samples of matter from beyond Mars. Visit today’s edition of Spaceweather.com for search tips and more information.

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Above: An array of all-sky cameras belonging to the University of Western Ontario recorded the fireball, which flared multiple times before the asteroid finally shattered.

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Astronomy News

NUKE SENSORS DETECT ASTEROID EXPLOSION

Comprehensive Nuclear Test Ban Treaty Organization sensors have detected an explosion near Puerto Rico. It was not, however, a nuclear bomb.

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Space Weather News for June 25, 2019
http://spaceweather.com
https://www.spaceweatheralerts.com

NUKE SENSORS DETECT ASTEROID EXPLOSION: On June 22nd, sensors operated by the Comprehensive Nuclear Test Ban Treaty Organization detected an explosion south of Puerto Rico.  It was not, however, a nuclear bomb. A small asteroid entered Earth’s atmosphere and exploded in the air like 3 to 5 kilotons of TNT. Weather satellites caught the space rock’s fragmentation. Movies and analysis are featured on today’s edition of Spaceweather.com.

Sign up for Space Weather Alerts and get an instant text message when auroras appear in your area.

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Above: A weather satellite image of the exploding space rock. Credit: NOAA/GOES-16

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Astronomy News

A COLLISION IN THE ASTEROID BELT

Space Weather News for Jan. 15, 2019
http://spaceweather.com
https://www.spaceweatheralerts.com

A COLLISION IN THE ASTEROID BELT: Something violent just happened in the asteroid belt. Not far beyond the orbit of Mars, asteroid 6478 Gault appears to have been struck by another asteroid. The resulting stream of debris stretches more than 400,000 km, which is greater than the distance between Earth and the Moon. Astronomers around the world are now monitoring the formerly unremarkable asteroid to see what happens next. Get the full story on today’s edition of Spaceweather.com.

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Above: Asteroid 6478 Gault and its unexpected tail, photographed on Jan. 9, 2019, by Damian Peach of Selsey UK.

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