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Meteor showers, eclipses, full moons: All of the reasons to look up in 2022 – CTV News

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Total lunar eclipses, a multitude of meteor showers and supermoons will light up the sky in 2022.

The new year is sure to be a sky-gazer’s delight with plenty of celestial events on the calendar.

There is always a good chance that the International Space Station is flying overhead. And if you ever want to know what planets are visible in the morning or evening sky, check The Old Farmer’s Almanac’s visible planets guide.

Here are the top sky events of 2022 so you can have your binoculars and telescope ready.

FULL MOONS AND SUPERMOONS

There are 12 full moons in 2022, and two of them qualify as supermoons.

Definitions of a supermoon can vary, but the term generally denotes a full moon that is brighter and closer to Earth than normal and thus appears larger in the night sky.

Some astronomers say that the phenomenon occurs when the moon is within 90% of perigee — which is its closest approach to Earth in orbit. By that definition, the full moon for June as well as the one in July will be considered supermoon events.

Here is the list of full moons for 2022, according to the Farmers’ Almanac:

January 17: Wolf moon

February 16: Snow moon

March 18: Worm moon

April 16: Pink moon

May 16: Flower moon

June 14: Strawberry moon

July 13: Buck moon

August 11: Sturgeon moon

September 10: Harvest moon

October 9: Hunter’s moon

November 8: Beaver moon

December 7: Cold moon

While these are the popularized names associated with the monthly full moon, each one carries varied significance across Native American tribes.

LUNAR AND SOLAR ECLIPSES

There will be two total lunar eclipses and two partial solar eclipses in 2022, according to The Old Farmer’s Almanac.

Partial solar eclipses occur when the moon passes in front of the sun, but only blocks some of its light. Be sure to wear proper eclipse glasses to safely view solar eclipses, as the sun’s light can be damaging to the eye.

A partial solar eclipse on April 30 can be seen by those in southern South America, the southeastern Pacific Ocean and the Antarctic peninsula. Another one on October 25 will be visible to those in Greenland, Iceland, Europe, northeastern Africa, the Middle East, western Asia, India and western China. Neither of the partial solar eclipses will be visible from North America.

A lunar eclipse can occur only during a full moon when the sun, Earth and moon align and the moon passes into Earth’s shadow. Earth casts two shadows on the moon during the eclipse. The penumbra is the partial outer shadow, and the umbra is the full, dark shadow.

When the full moon moves into Earth’s shadow, it darkens, but it won’t disappear. Sunlight passing through Earth’s atmosphere lights the moon in a dramatic fashion, turning it red — which is why this is often referred to as a “blood moon.”

Depending on the weather conditions in your area, it may be rusty, brick-coloured or blood red.

This happens because blue light undergoes stronger atmospheric scattering, so red light will be the most dominant colour highlighted as sunlight passes through our atmosphere and casts it on the moon.

A total lunar eclipse will be visible to those in Europe, Africa, South America and North America (excepting northwestern regions) between 9:31 p.m. ET on May 15 and 2:52 a.m. ET on May 16.

Another total lunar eclipse will also be on display for those in Asia, Australia, the Pacific, South America and North America on November 8 between 3:01 a.m. ET and 8:58 a.m. ET — but the moon will be setting for those in eastern regions of North America.

METEOR SHOWERS

The new year kicks off with the Quadrantid meteor shower, which is expected to peak in the overnight hours between January 2 and 3 for those in North America, according to the American Meteor Society.

It’s the first of 12 meteor showers throughout the year — although the next one, the Lyrid meteor shower, doesn’t peak until April.

Here are the other showers to watch for in 2022:

Lyrids: April 21-22

Eta Aquariids: May 4-5

Southern delta Aquariids: July 29-30

Alpha Capricornids: July 30-31

Perseids: August 11-12

Orionids: October 20-21

Southern Taurids: November 4-5

Northern Taurids: November 11-12

Leonids: November 17-18

Geminids: December 13-14

Ursids: December 21-22

If you live in an urban area, you may want to drive to a place that isn’t littered with city lights that will obstruct your view. If you’re able to find an area unaffected by light pollution, meteors could be visible every couple of minutes from late evening until dawn.

Find an open area with a wide view of the sky. Make sure you have a chair or blanket so you can look straight up. And give your eyes about 20 to 30 minutes to adjust to the darkness — without looking at your phone — so the meteors will be easier to spot.

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Mars Was Likely A Cold, Wet World 3 Billion Years Ago – IFLScience

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Mars is puzzling. From rover and satellite observations we know that it once had plenty of water on its surface, which usually suggests warm and wet conditions. On the other hand, evidence suggests the planet was always pretty chilly, even in the distant past, but it’s not a cold, dry desert either. These two ideas are often at odds, but new research suggests that they could both be true: ancient Mars was likely a frigid world both cold and wet.

Researchers set out to create a model that can explain the perplexing features witnessed on the Red Planet. If the planet wasn’t warm and wet or cold and dry could there be a third option? Publishing their findings in Proceedings of the National Academy of Sciences, they believe that their cold and wet scenario can explain the existence of a vast liquid ocean in the Northern Hemisphere of Mars, extending to its polar region.

However, the model needed to explain both the presence of a liquid ocean and ice-capped regions, like the presence of glacial valleys and ice sheets in the southern highlands.

Planetary scientists studying Mars have found evidence of ancient tsunamis that rocked the Red Planet. If the ocean was frozen due to a very cold climate, these tsunamis would not have happened. But a milder climate would have meant transferring water from the ocean to the land through precipitation. Cold and wet conditions, however, could have existed.

The team used an advanced general circulation model to work out the necessary parameters for this world. They calculated it was possible for an ocean to be stable even if the mean temperature of Mars was below 0°C (32°F), the freezing point of water, 3 billion years ago. They envisioned ice-covered plateaus in the south with glaciers flowing across the plains and returning to the ocean. Rainfall would have been moderate around the shoreline. In this scenario, the ocean surface could be up to 4.5°C (40°F); not tropical but enough for water to stay liquid.

The key to these conditions is all in the air. The atmosphere of Mars today is about 1 percent in density compared to Earth’s own. But, if in the past it was roughly the same and was made of about 10 percent hydrogen and the rest carbon dioxide, this scenario would actually work. Previous analyses have found strong evidence for a thicker atmosphere before it was ripped from the planet by the steady stream of particles from the Sun.

The model is certainly compelling in explaining the peculiarities of Mars, but of course, much more evidence is needed to understand what the Red Planet was really like billions of years ago.

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Explainer-Scientists struggle to monitor Tonga volcano after massive eruption

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Scientists are struggling to monitor an active volcano that erupted off the South Pacific island of Tonga at the weekend, after the explosion destroyed its sea-level crater and drowned its mass, obscuring it from satellites.

The eruption of Hunga-Tonga-Hunga-Ha’apai volcano, which sits on the seismically active Pacific Ring of Fire, sent tsunami waves across the Pacific Ocean and was heard some 2,300 kms (1,430 miles) away in New Zealand.

“The concern at the moment is how little information we have and that’s scary,” said Janine Krippner, a New Zealand-based volcanologist with the Smithsonian Global Volcanism Program.

“When the vent is below water, nothing can tell us what will happen next.”

Krippner said on-site instruments were likely destroyed in the eruption and the volcanology community was pooling together the best available data and expertise to review the explosion and predict anticipated future activity.

Saturday’s eruption was so powerful that space satellites captured not only huge clouds of ash but also an atmospheric shockwave that radiated out from the volcano at close to the speed of sound.

Photographs and videos showed grey ash clouds billowing over the South Pacific and metre-high waves surging onto the coast of Tonga.

There are no official reports of injuries or deaths in Tonga https://www.reuters.com/business/environment/impact-assessment-aid-efforts-underway-world-responds-tonga-tsunami-2022-01-16 yet but internet and telephone communications are extremely limited and outlying coastal areas remain cut off.

Experts said the volcano, which last erupted in 2014, had been puffing away for about a month before rising magma, superheated to around 1,000 degrees Celsius, met with 20-degree seawater on Saturday, causing an instantaneous and massive explosion.

The unusual “astounding” speed and force of the eruption indicated a greater force at play than simply magma meeting water, scientists said.

As the superheated magma rose quickly and met the cool seawater, so did a huge volume of volcanic gases, intensifying the explosion, said Raymond Cas, a professor of volcanology at Australia’s Monash University.

Some volcanologists are likening the eruption to the 1991 Pinatubo eruption in the Philippines, the second-largest volcanic eruption of the 20th century, which killed around 800 people.

The Tonga Geological Services agency, which was monitoring the volcano, was unreachable on Monday. Most communications to Tonga have been cut after the main undersea communications cable lost power.

LIGHTNING STRIKES

American meteorologist, Chris Vagasky, studied lightning around the volcano and found it increasing to about 30,000 strikes in the days leading up to the eruption. On the day of the eruption, he detected 400,000 lightning events in just three hours, which comes down to 100 lightning events per second.

That compared with 8,000 strikes per hour during the Anak Krakatau eruption in 2018, caused part of the crater to collapse into the Sunda Strait and send a tsunami crashing into western Java, which killed hundreds of people.

Cas said it is difficult to predict follow-up activity and that the volcano’s vents could continue to release gases and other material for weeks or months.

“It wouldn’t be unusual to get a few more eruptions, though maybe not as big as Saturday,” he said. “Once the volcano is de-gassed, it will settle down.”

 

(Reporting by Kanupriya Kapoor; Editing by Jane Wardell and Michael Perry)

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Astronauts at Risk of 'Space Anemia' | Health | thesuburban.com – The Suburban Newspaper

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MONDAY, Jan. 17, 2022 (HealthDay News) — Astronauts can develop a condition called space anemia because their bodies destroy more red blood cells than normal when in space, a groundbreaking study shows.

Assessments of 14 astronauts over six months between space missions found that 54% more blood cells were destroyed while they were in space than when they were on Earth, according to findings published Jan. 14 in Nature Medicine.

“Space anemia has consistently been reported when astronauts returned to Earth since the first space missions, but we didn’t know why,” said lead author Dr. Guy Trudel of the Ottawa Hospital Research Institute in Canada. “Our study shows that upon arriving in space, more red blood cells are destroyed, and this continues for the entire duration of the astronauts’ mission.”

Before this study, it was believed that space anemia was due to fluid shifting into an astronaut’s upper body upon arrival in space.

Astronauts lose 10% of the liquid in their blood vessels this way. It was thought that their bodies rapidly destroyed 10% of their red blood cells to restore the balance, and that red blood cell control returned to normal after 10 days in space.

But this study found that red blood cell destruction is a primary effect of being in space, not just the result of fluid shifts.

On Earth, our bodies create and destroy 2 million red blood cells every second. But the astronauts in this study — both male and female — destroyed 3 million every second while in space.

Five of 13 astronauts in the study were clinically anemic when they returned to Earth. One of the 14 did not have blood drawn on landing.

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The researchers also found that space anemia is reversible, with red blood cells levels progressively returning to normal three to four months after astronauts returned from space.

“Thankfully, having fewer red blood cells in space isn’t a problem when your body is weightless,” Trudel said in a hospital news release. “But when landing on Earth and potentially on other planets or moons, anemia affecting your energy, endurance and strength can threaten mission objectives. The effects of anemia are only felt once you land, and must deal with gravity again.”

The findings could be prove useful for patients who develop anemia after long illnesses that require bed rest. Bed rest has been shown to cause anemia, but how it does so is unknown.

The mechanism may be like what occurs in space anemia, according to Trudel, who plans to investigate this theory in future research.

More information

The American Academy of Family Physicians has more on anemia.

SOURCE: The Ottawa Hospital, news release, Jan. 14, 2022

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