adplus-dvertising
Connect with us

Science

From Saint John to outer space: These astronomy buffs have a new planetary namesake

Published

 on

Three New Brunswickers are enjoying an astronomical surprise: an asteroid has been named after them.

It’s called Mipach — using the first two letters from the names of Saint Johners Mike Powell, Paul Owen and Chris Curwin.

“I saw the email and the other two guys hadn’t seen it yet. So I was frantically on the phone and messaging them back and forth, getting them to take a look. So it was just overwhelming,” Curwin said.

The asteroid is 6.37 kilometres in diameter and resides in the main belt, between the orbit of Mars and Jupiter, he said. It was discovered in 1991.

A screenshot of the orbit viewer from the Jet Propulsion Laboratory at the California Institute of Technology showing Mipach (20020) as of Nov. 17, 2023. (Courtesy NASA/JPL-Caltech)

Owen said when Curwin told him and Powell about Mipach, he thought it was a joke at first. But after he processed the information, he said he was stunned.

“I’m still letting it sink in. So I guess … I haven’t absorbed it all yet,” Owen said.

The process of naming minor planets, which includes asteroids and comets, is done by a working group within the International Astronomical Union called Small Bodies Nomenclature.

Gareth Williams, an astronomer based in Massachusetts and the secretary of the working group, said about every three weeks more names are revealed, and it is the working group’s job to approve those names.

A man is shown by a beach with a large telescope.
Chris Curwin said he’s always been interested in astronomy, ever since he was a kid. (Paul Owen)

He said names for these minor planets are generally suggested by those credited with the discovery of the object.

Then, the 11 voting members in the group will approve or deny the suggestion.

But sometimes, those names are suggested by outside sources, as in the case of Mipach, which Williams said was suggested by Canadian astronomer Peter Jedicke, who proposed a number of names, primarily after Canadian amateur astronomers.

The names of minor planets are given for identification purposes, said Williams, not commemoration. But he said he’s heard from amateur astronomers who are very happy to have their name attached to a minor planet.

A man with a brown and grey beard and rimless eye glasses. He is wearing a red sweater.
Gareth Williams, the secretary of the International Astronomical Union said names for minor planets are suggested by whoever is credited with their discovery. (Zoom/CBC)

Williams said that amateur astronomers are people who work in the field, usually in an unpaid capacity, but that doesn’t necessarily mean they’re unprofessional.

“Amateur has a negative connotation, except in astronomy, where good amateurs can produce better results than some professionals,” he said.

Live — from Saint John

 A bulletin from the International Astronomical Union mentions the three amateur astronomers and their program, the Sunday Night Astronomy Show, broadcast live from the Saint John Astronomy Club on Rogers TV and YouTube.

Curwin said the program started as a way to share lives views of the night sky, but in the last three years there have only been four clear Sunday nights, so the group quickly realized that wasn’t going to work.

So they started talking about telescopes and getting into astronomy as a hobby and it grew from there.

Curwin said he’s always been interested in astronomy, starting when he was s a kid, lying on the grass, looking at the stars. He remembers using a telescope one night to gaze at the Andromeda Galaxy, but when he looked around, nobody else was there to experience it, which made him want to share it.

“It’s that whole thing —is to try to think of the fact that that’s how tiny we really are in this whole vast scheme of things, you know, we live 100 years and it takes, you know, Pluto 250 years to orbit around the sun once,” he said.

A man with black-framed glasses and a black flat cap. He is in front of a black background.
Paul Owen said he never imagined he’d be part of an asteroid’s name. (Paul Owen)

Owen has long been involved with showing off “night sky treasures,” and served with the New Brunswick chapter of the Royal Astronomical Society of Canada up until this year, where he would host people for a weekend in the park to admire the sky.

But he said he never would have imagined being one-third of an asteroid’s namesake.

“We did the show and we didn’t even know how that would go. It’s just something that we do because we’re all passionate about astronomy,” said Owen.

“So it’s kind of morphed into what it is and and to receive this designation because of it, it’s certainly an honour.”

 

728x90x4

Source link

Continue Reading

News

The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

Published

 on

 

TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

Source link

Continue Reading

News

B.C. sets up a panel on bear deaths, will review conservation officer training

Published

 on

 

VICTORIA – The British Columbia government is partnering with a bear welfare group to reduce the number of bears being euthanized in the province.

Nicholas Scapillati, executive director of Grizzly Bear Foundation, said Monday that it comes after months-long discussions with the province on how to protect bears, with the goal to give the animals a “better and second chance at life in the wild.”

Scapillati said what’s exciting about the project is that the government is open to working with outside experts and the public.

“So, they’ll be working through Indigenous knowledge and scientific understanding, bringing in the latest techniques and training expertise from leading experts,” he said in an interview.

B.C. government data show conservation officers destroyed 603 black bears and 23 grizzly bears in 2023, while 154 black bears were killed by officers in the first six months of this year.

Scapillati said the group will publish a report with recommendations by next spring, while an independent oversight committee will be set up to review all bear encounters with conservation officers to provide advice to the government.

Environment Minister George Heyman said in a statement that they are looking for new ways to ensure conservation officers “have the trust of the communities they serve,” and the panel will make recommendations to enhance officer training and improve policies.

Lesley Fox, with the wildlife protection group The Fur-Bearers, said they’ve been calling for such a committee for decades.

“This move demonstrates the government is listening,” said Fox. “I suspect, because of the impending election, their listening skills are potentially a little sharper than they normally are.”

Fox said the partnership came from “a place of long frustration” as provincial conservation officers kill more than 500 black bears every year on average, and the public is “no longer tolerating this kind of approach.”

“I think that the conservation officer service and the B.C. government are aware they need to change, and certainly the public has been asking for it,” said Fox.

Fox said there’s a lot of optimism about the new partnership, but, as with any government, there will likely be a lot of red tape to get through.

“I think speed is going to be important, whether or not the committee has the ability to make change and make change relatively quickly without having to study an issue to death, ” said Fox.

This report by The Canadian Press was first published Sept. 9, 2024.

The Canadian Press. All rights reserved.

Source link

Continue Reading

Science

Asteroid Apophis will visit Earth in 2029, and this European satellite will be along for the ride

Published

 on

Asteroid Apophis

The European Space Agency is fast-tracking a new mission called Ramses, which will fly to near-Earth asteroid 99942 Apophis and join the space rock in 2029 when it comes very close to our planet — closer even than the region where geosynchronous satellites sit.

Ramses is short for Rapid Apophis Mission for Space Safety and, as its name suggests, is the next phase in humanity’s efforts to learn more about near-Earth asteroids (NEOs) and how we might deflect them should one ever be discovered on a collision course with planet Earth.

In order to launch in time to rendezvous with Apophis in February 2029, scientists at the European Space Agency have been given permission to start planning Ramses even before the multinational space agency officially adopts the mission. The sanctioning and appropriation of funding for the Ramses mission will hopefully take place at ESA’s Ministerial Council meeting (involving representatives from each of ESA’s member states) in November of 2025. To arrive at Apophis in February 2029, launch would have to take place in April 2028, the agency says.

This is a big deal because large asteroids don’t come this close to Earth very often. It is thus scientifically precious that, on April 13, 2029, Apophis will pass within 19,794 miles (31,860 kilometers) of Earth. For comparison, geosynchronous orbit is 22,236 miles (35,786 km) above Earth’s surface. Such close fly-bys by asteroids hundreds of meters across (Apophis is about 1,230 feet, or 375 meters, across) only occur on average once every 5,000 to 10,000 years. Miss this one, and we’ve got a long time to wait for the next.

When Apophis was discovered in 2004, it was for a short time the most dangerous asteroid known, being classified as having the potential to impact with Earth possibly in 2029, 2036, or 2068. Should an asteroid of its size strike Earth, it could gouge out a crater several kilometers across and devastate a country with shock waves, flash heating and earth tremors. If it crashed down in the ocean, it could send a towering tsunami to devastate coastlines in multiple countries.

Over time, as our knowledge of Apophis’ orbit became more refined, however, the risk of impact  greatly went down. Radar observations of the asteroid in March of 2021 reduced the uncertainty in Apophis’ orbit from hundreds of kilometers to just a few kilometers, finally removing any lingering worries about an impact — at least for the next 100 years. (Beyond 100 years, asteroid orbits can become too unpredictable to plot with any accuracy, but there’s currently no suggestion that an impact will occur after 100 years.) So, Earth is expected to be perfectly safe in 2029 when Apophis comes through. Still, scientists want to see how Apophis responds by coming so close to Earth and entering our planet’s gravitational field.

“There is still so much we have yet to learn about asteroids but, until now, we have had to travel deep into the solar system to study them and perform experiments ourselves to interact with their surface,” said Patrick Michel, who is the Director of Research at CNRS at Observatoire de la Côte d’Azur in Nice, France, in a statement. “Nature is bringing one to us and conducting the experiment itself. All we need to do is watch as Apophis is stretched and squeezed by strong tidal forces that may trigger landslides and other disturbances and reveal new material from beneath the surface.”

The Goldstone radar’s imagery of asteroid 99942 Apophis as it made its closest approach to Earth, in March 2021. (Image credit: NASA/JPL–Caltech/NSF/AUI/GBO)

By arriving at Apophis before the asteroid’s close encounter with Earth, and sticking with it throughout the flyby and beyond, Ramses will be in prime position to conduct before-and-after surveys to see how Apophis reacts to Earth. By looking for disturbances Earth’s gravitational tidal forces trigger on the asteroid’s surface, Ramses will be able to learn about Apophis’ internal structure, density, porosity and composition, all of which are characteristics that we would need to first understand before considering how best to deflect a similar asteroid were one ever found to be on a collision course with our world.

Besides assisting in protecting Earth, learning about Apophis will give scientists further insights into how similar asteroids formed in the early solar system, and, in the process, how  planets (including Earth) formed out of the same material.

One way we already know Earth will affect Apophis is by changing its orbit. Currently, Apophis is categorized as an Aten-type asteroid, which is what we call the class of near-Earth objects that have a shorter orbit around the sun than Earth does. Apophis currently gets as far as 0.92 astronomical units (137.6 million km, or 85.5 million miles) from the sun. However, our planet will give Apophis a gravitational nudge that will enlarge its orbit to 1.1 astronomical units (164.6 million km, or 102 million miles), such that its orbital period becomes longer than Earth’s.

It will then be classed as an Apollo-type asteroid.

Ramses won’t be alone in tracking Apophis. NASA has repurposed their OSIRIS-REx mission, which returned a sample from another near-Earth asteroid, 101955 Bennu, in 2023. However, the spacecraft, renamed OSIRIS-APEX (Apophis Explorer), won’t arrive at the asteroid until April 23, 2029, ten days after the close encounter with Earth. OSIRIS-APEX will initially perform a flyby of Apophis at a distance of about 2,500 miles (4,000 km) from the object, then return in June that year to settle into orbit around Apophis for an 18-month mission.

Related Stories:

Furthermore, the European Space Agency still plans on launching its Hera spacecraft in October 2024 to follow-up on the DART mission to the double asteroid Didymos and Dimorphos. DART impacted the latter in a test of kinetic impactor capabilities for potentially changing a hazardous asteroid’s orbit around our planet. Hera will survey the binary asteroid system and observe the crater made by DART’s sacrifice to gain a better understanding of Dimorphos’ structure and composition post-impact, so that we can place the results in context.

The more near-Earth asteroids like Dimorphos and Apophis that we study, the greater that context becomes. Perhaps, one day, the understanding that we have gained from these missions will indeed save our planet.

 

728x90x4

Source link

Continue Reading

Trending