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Just as the flowers have now blossomed, the skies are also in full bloom this spring. This month of April is abundant in astronomical events that are worthy of celebration like the sakura.

Two of these astronomical events have already passed (both occurred on April 1), but there are still eight more to look forward to. Without further ado, here are the nighttime sky phenomena you have to watch out for:

April 6 – Leo the Lion’s Heart Gets Up Close and Personal With the Moon

On the night of the sixth, the heart of the constellation Leo (called Regulus), will only be one degree away from Luna. To best see the blue-white heart of the lion and its closeness with the moon, cover the moon’s disc with your thumb. That way, the glare is cut off and you will better see the distinctive reverse question mark sign of Leo’s front.

April 7 – Jupiter Lights Up the Sky

Just a day after the gibbous moon passes by Leo’s heart, Jupiter will light up the sky with its celestial brightness. This is because Jupiter will be sitting exactly opposite of the sun, letting it bask in the solar light. Thanks to that, the planet will be at its brightest and largest for the year on April 7.

April 10 – Luna Joins Jupiter

Two nights after this, Jupiter will also have another moment as its moons will cast large shadows on its face. However, that is not the last sky event that features the planetary version of the supreme god of Rome. On April 10, the planet will continue to reign in the night sky as a full moon graces the heavens with it. At the same time, the two celestial bodies will also edge closer to Spica. This makes three astronomical events for Jupiter this April.

April 16 – Moon Glides By Saturn

For those who have difficulty spotting Saturn in the sky, watch out for this astronomical event as the moon will help you out. However, this will happen in the wee hours of morning just before dawn, so you either have to stay up later or wake up really early in time for this to happen.

But for patient stargazers armed with even the smallest telescope, Saturn will show off its rings. On top of that, it might even offer a glimpse of its moons.

April 22 – Mars Guides the Eye to Pleiades

The Red Planet will begin its descent in the western sky as early as April 17. Thanks to its movement, it will draw close to the cluster of stars called the Pleiades or the Seven Sisters. But the peak of this celestial event will be on the 22nd when they align close to each other at the same spot in the sky.

April 22 – Lyrid Meteor Shower Peak

Although the Lyrid meteor shower is active annually for a week or so around April 16 – 25, this year the astronomical event will peak on the morning of April 22. So if you want to catch the short bursts of falling stars, you have to stay up late on the night of the 21st. And if you want to see the bulk of the shower, you have to keep your eyes peeled until a few hours before sun-up. Fortunately, the waning crescent moon will not rain on the meteors’ parade.

Lyrid Shower

Lyrid Shower- credit: NASA/ MSFC/ Danielle Moser.

April 23 – Venus Sidles Beside Luna

Venus the Morning Star will align beside the moon in the early morning of April 23. Stargazers are advised to use binoculars to better see Venus and the moon hang in the sky beside each other. Also, the best time for this would be 45 minutes before the sun goes up.

April 28 – Aldebaran and the Moon Meet Again

Aldebaran and the moon will cozy up with each other for the second time in April on the 28th (the first time was on the 1st). Taurus’ brightest star and the earth’s satellite next encounter will bring them much closer to each other. At this point, they will only be half a degree apart from each other.

That’s not all, though. There is an astronomical event called lunar occultation, when Aldebaran goes behind the moon, that lucky stargazers in Europe, North America, and North Africa will witness. Times vary across continents so you have to check out this table to find out what time you should peep at the sky.

So, which one of these astronomical events are you most excited for?

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Astronomy

Witness the rare celestial event of Mars and Jupiter reaching their closest proximity in the sky this week, a phenomenon that will not occur again until 2033.

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Mars and Jupiter will be only 0.3 degrees apart in the sky on August 14. From our point of view, this passage is very close. If you miss it, you won’t be able to see another one until 2033.

When two objects pass each other in the sky from our point of view, this is called a conjunction. Every time two planets came together, the closer one would block out the other because they would all be moving in a perfectly flat plane. The orbits of the planets are slightly different from those of the other planets, though, so they move slightly to the north and south of each other. Every time, that gap is a different size.

When two things happen close together, the results are especially stunning. Jupiter and Saturn were close enough to each other in 2020 that they could be seen in the same field of view through a telescope. This is a treat for people who like to observe the sky.

Being 0.5 degrees wide, the full moon will fit in any view that can hold the whole moon. This pair will also look good before and after the full moon.

But even with the naked eye, a close conjunction can make the sky look even more amazing. The contrast between the red of Mars and the white of Jupiter will be especially striking. However, Mars’ brightness changes a lot. When it’s at its brightest, it’s about the same brightness as Jupiter. Right now, it’s 16 times less bright. They are so bright that, unless there are clouds, you should be able to see them from all but the dirtiest cities.

Most people in the world will miss this sight, though, because they can’t see the pair of planets in the evening from anywhere on Earth. The exact time they rise depends on where you live, but it’s usually between midnight and 3 am. To see this, you will mostly need to get up before astronomical twilight starts so that you have time to get through the thickest part of the atmosphere.

For people in Europe, Africa, west Asia, and the Americas, the closest time will be 14:53 UTC, which is during the day. The mornings before and after, though, will look almost as close.

Mars and Jupiter meet about every two and a half years, but the most recent one was almost twice as far away and could only be seen in the morning. In 2029, the gaps will be just under two degrees. The next one will be even wider, at more than a degree.

When planets are close to each other, that doesn’t always mean that their distance from each other is very small. Mars has been around the Sun for 687 days, but it is now less than 100 days past its perihelion, which means it is closer than usual. Even though Jupiter is a little closer than usual, it’s not really that close. To be as close as possible to each other, Mars has to be at its farthest point, and Jupiter has to be at its closest point. So this one is not unusual.

But if you want to see something beautiful, you will have to wait more than nine years to see it again.

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Astronomy

It may not be long before we find “Earth’s Twin”

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To figure out if there is life in other parts of the universe, we start with Earth, where there is life now. Finding another Earth is a good way to find aliens. We have found more than 5,000 exoplanets, but we haven’t found Earth’s twin yet. This could change soon, though. Here comes the PLATO mission from the European Space Agency (ESA).

What does PLATO stand for? It stands for PLAnetary Transits and Oscillations of stars. Its goal is very clear. It will look for nearby stars like the Sun that might have habitable worlds like Earth.

“One of the main goals is to find a way to compare Earth and the Sun.” The size of Earth is in the habitable zone of a star like the Sun. “We want to find it around a star that’s bright enough that we can really figure out how heavy it is and how big it is,” Dr. David Brown from the University of Warwick told IFLScience. “If you like, that’s our main goal.”

The telescope is not only an observatory for looking for planets, but it is also an observatory for collecting data on a huge number of stars. The mission team thinks that the fact that it can do both is a key part of why this telescope will be so important.

“You have two parts of the mission.” One is exoplanets, and the other is the stars. “From a scientific point of view, I think it’s pretty cool that these two parts are working together to make the best science we can,” Dr. Brown said.

One of the secondary goals is to make a list of all the planets that are Earth-like and all the star systems that are out there. One more goal is to find other solar systems that are like ours. Even though we don’t know for sure if our little part of the universe is truly unique, it does seem to be different from everything else.

Dr. Brown told IFLScience, “We have a bunch of other scientific goals.” “Really, how well do we know how planetary systems change and grow over time?” Planetary systems are something we’re trying to understand as a whole, not just one planet at a time.

PLATO is different in more ways than just the goals. It is not just one telescope. In fact, it’s made up of 26 different ones. Two of the cameras are fast, and the other 24 are normal cameras set up in groups of six with a small gap between them. This makes the telescope work better, has a wider field of view, and lets you quickly rule out false positives.

It can be hard to tell which of the things you find when you transit exoplanets are real and which ones are not. With the help of several telescopes, we were able to block out some of the mimics that we would have seen otherwise. “Plus, it looks pretty cool,” Dr. Brown said with excitement. “This big square with all of these telescopes pointing at you looks really cool!”

This week, Dr. Brown gave an update on PLATO at the National Astronomy Meeting at the University of Hull. The telescope is being put together and has recently passed important tests. There are no changes to the planned launch date for December 2026. An Ariane 6 rocket, the same kind that made its first launch last week, will take off from French Guiana.

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Astronomy

You can watch and listen to gravitational waves coming from everywhere in the universe

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Gravitational waves can be turned into sound very easily. The little chirp changes into little sounds as soon as the blocks hit each other. One of those chirps is my ringtone when my phone has sound, which doesn’t happen very often. The people at Audio Universe have now made the gravitational wave data even better.

In a 3D video, the sounds of gravitational waves hit you from the direction in the sky where it is thought they came from. The sound effects and visualization are both great. There are tiny vibrations in space-time that can hit you as you move your mouse, phone, or VR headset.

Like other sonification projects, it gives blind and visually impaired people a way to get involved in astronomy. It works well with other methods like the Tactile Universe. But that’s not the only reason why they do it.

“We want to do this for three reasons.” It helps researchers look into big, complicated datasets with lots of dimensions. It could be used to make educational materials that are immersive and interesting. Rose Shepherd from Newcastle University says, “It can also make astronomy easier for more people to understand, which is an important thing.” “Making things easier to get makes them better for everyone.”

Being able to listen to the emission lines of celestial objects is one of the most interesting things about sonification for research. As an object moves, its light spectrum peaks spread out, and sonification can make something that is barely noticeable to the eye seem very clear to the ear.

This is helpful in more than one field, though. The group has thought about how adding sound to different datasets could make them better. Warming Stripes is a cool example of this. This is a simple image that shows changes in temperature over time by using a series of stripes, from blue to red. The stripes on the right side get redder as we move from the left to the right. The left side shows decades ago. It is great to see how the climate crisis is getting worse, and now sound adds a little more to it.

“By adding sounds, it can give your data an emotional meaning.” Shepherd explained, “You can use that to show the data how you feel.” “We didn’t mean for the Warming Stripes sonification to make people feel stressed, but it was interesting to see how they reacted instead of just watching the video.”

Audio Universe is making a sonic toolkit that many people can use to make their own resources.

She gave a talk about the audio universe at the National Astronomy Meeting at the University of Hull this week.

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