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Astronomers have discovered an extrasolar planet “similar” to Mars and Mercury.

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Astronomers have discovered an extrasolar planet "similar" to Mars and Mercury.

Astronomers have discovered a planet outside the solar system that orbits its star in just eight hours, is almost the size of Mars and half the mass of Earth, and the interior may be similar to Mercury. The information was released on Thursday.

The planet in question, called GJ 367b, orbits a red dwarf that is 31 light years from the Sun and is considered one of the lightest planets, according to a statement from the Massachusetts Institute of Technology in the United States, which was involved in the investigation based on observations from with the help of the space telescope “hunter” for extrasolar planets TESS, operated by the American agency NASA.

According to a group of astronomers, it is a rocky planet that “likely contains a solid core of iron and nickel, similar to the interior of Mercury,” the closest to the Sun and the smallest planet in the Solar System.

Because of its “extreme proximity” to its star, the planet will receive 500 times more radiation from it than the Earth receives from the Sun.

Surface temperatures in GJ 367b can reach 1500 ° C, resulting in the evaporation of any significant atmosphere and the disappearance of possible signs of life, as is known.

However, according to astronomers, although ‘GJ 367b’ is not in the so-called “habitable zone” of the star, in the presence of liquid water on its surface, it orbits a red dwarf star, which usually contains “several planets.”

In this context, for the investigating team, “GJ 367b” may end up having “habitable partners” planets, that is, with conditions for the presence of liquid water on the surface (liquid water is essential for life, as if you knew) …

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“For stars of this class, the habitable zone will be somewhere between two to three weeks of orbit,” said George Riker, a researcher at the Massachusetts Institute of Technology responsible for the scientific leadership of the study, in a statement. Telescope TESS.

Thanks to the HARPS spectrograph installed in one of the telescopes of the European Southern Observatory in La Silla, Chile, astronomers were able to determine that exoplanet GJ 367b is one of the lightest planets.

The results of the work, coordinated by scientists from the Institute for Planetary Research of the German Aerospace Center, are published in the scientific journal Science.

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Google pushes Apple for new RCS messaging campaign

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Google pushes Apple for new RCS messaging campaign

O Google launched another advertising campaign to put pressure on Apple Adopt the RCS standard for instant messaging. “Get The Message” is a short video demonstrating the wide availability of the messaging format across a wide variety of brands using Android and highlighting Apple’s neglect.




Photo: Robert Scoble (VisualHunt) / Matkuz (Pixabay) / Canaltech

The images provide a very simple explanation of what RCS is and how the protocol can improve online chat. The structure of the format allows you to send multimedia messages, check the status of reading and much more, creating competition for services such as whatsapp e Telegram.

 

Campaign not the reference to distinguishing the colors of the balloons goes unnoticed, obviously. Text field colors sparked controversy a few months ago when the Wall Street Journal reported on the complex stigmatization of “green balls,” the palette used by iOS to represent messages received in the SMS standard (usually sent from Android devices). . . .

“Apple just needs to think differently,” says the commercial, referring to Apple’s old “Think Different” slogan.

old trick

Within a few months Google tries to convince Apple accept the RCS protocol as one of the formats accepted by iMessage, the default messaging app for iPhone. Adding a format would actually facilitate communication between users of different platforms, but the debate goes deeper.

O The RCS format started slowly and suffered greatly from dependence on telephone operators. – something that in some way created a certain prejudice against technology. It was difficult to know when this standard was used for messaging, how much it cost, and what its benefits were. The situation began to change in 2019, when Google took over the implementation of the protocol.

From there, the reach of RCS has been greatly extended to Android devices. The popularity of the protocol, which simplifies communication, has spurred the adoption of Google Messages, the company’s dedicated SMS and RCS chat application.

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However, one final hurdle is missing: Apple. iMessage may not be one of the strongest apps in Brazil (which is dominated by WhatsApp), but its presence in other regions of the world such as the US is very important.

Stuck with Apple

However, this condition of exclusivity creates a vicious circle – and Apple knows it. While iMessage provides simplified communication between Apple consumers, the trend is that they will continue to buy new iPhones. A user trying to get out of this “bubble” can be excluded from most conversations between friends, teachers, colleagues and family, as a Wall Street Journal article found.

So if Apple adopted the RCS standard, iPhone owners would have another opportunity to leave the company’s ecosystem, even if they had to try an Android phone. The move will not generate direct profit for Google, but buying more Android devices will inevitably increase the company’s market share in this segment.

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The Earth was hit by the solar wind at a speed of 600 kilometers per second

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Ilustração vento solar a atingir a Terra

We really do not live in peacetime. There is talk of extreme droughts, wars, fires, economic crises, and even in space, our star insists on whipping the planet with solar winds that surprise scientists who study these phenomena. The most recent case was a solar storm that hit Earth over the weekend. Without warning, the winds “hit” our planet in a completely unexpected way.

On Sunday, a stream of solar wind hit the Earth’s magnetic field, the speed of which reached more than 600 kilometers per second.

As we already mentioned, our star is in its 25th cycle, and when it began, the researchers left an alert that this new 11-year period will not be as calm as the last one, which ended at the end of 2019.

Some events, such as the M4.4 class solar flare or the X-class flare that occurred in 2021, show ongoing activity on our star. By the way, we saw that a G1 class storm was predicted last week. According to NOAA, this event, which reached us on August 3, did not cause any problems and its origin was associated with a hole in the sun. as explained here.

Image of auroras caused by solar winds hitting our atmosphere

The Earth received an unexpected impact at a speed of more than 600 kilometers per second

Without warning, a strong gust of solar wind hit Earth last Sunday. While it's not all that alarming - solar storms often hit our planet and cause spectacular auroras - it's strange that this storm was completely unexpected.

This event was not in the forecast, so the auroras that arose came as a surprise.

informed SpaceWeather.

The solar wind occurs when a stream of high-energy particles and plasma can no longer be held by the Sun's gravity and erupts towards the Earth. Because how our Sun works is still largely unknown, these emissions are thought to come from large, bright spots on the Sun known as "corona holes." These events taking place on a star have been observed for a long time, and there is a lot of observational work being done here on Earth.

Picture of two holes in the sun

Through this attention to holes, scientists have been able to create "predictions" of space weather. They can already predict when these solar storms or solar flares, also known as coronal mass ejections (CMEs), will come our way. Plus, you can already see how powerful they will be.

However, this does not mean that the Sun does not surprise us and hit us without warning, as it did over the weekend.

But how was this effect of solar winds on our planet discovered?

Earlier Sunday, NASA's Deep Space Climate Observatory (DSCOVR) observed solar wind light streams that increased significantly and unexpectedly throughout the day. The cause of this solar storm is still unknown, but SpaceWeather suggests it may have been an early arrival of the solar wind, which is expected to come from an equatorial hole in the Sun's atmosphere two days later. Or it could be a lost coronal mass ejection (CME).

The inhomogeneity of the solar wind data at 00:45 UT on August 7 suggests a shock wave embedded in the solar wind.

Today, the active sun produces so many small explosions that it is easy to ignore the faint coronal ejections heading towards Earth.

This is how he described the SpaceWeather service.

It is interesting to note that as of today, August 9, the high-speed solar wind continues to beat the Earth's magnetic field, with records showing speeds as high as 551.3 kilometers per second. This new "attack" on our natural shield began this morning at 5 am.

The good news is that the solar wind is not harmful to us here on Earth. This is because we are safely protected by our planet's atmosphere.

However, when the "collision" is strong, our technologies can suffer from it. That's why they talk about it and we've seen it before problems with telecommunications satellites and, in extreme cases, with electrical networks.

Solar storm classified as G2

These winds have been classified as a moderate G2 solar storm - storms are classified as G1 at the bottom of the scale to G5 which is a powerful solar storm.

According to space meteorology, G2 storms can affect high-latitude energy systems and could impact spacecraft orbit forecasts.

In fact, it is already becoming a routine. This is due to the fact that this year there are especially many such events. However, as mentioned above, these 11 years of the 25th solar cycle will not be peaceful.

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Scorpion: New Belfast Evo and Evo Carbon Retro Helmets

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Korean helmet manufacturer Scorpion is best known for its sporty modular touring and aggressive style urban helmets. But the brand also has a vintage helmet that has been on the market for half a dozen years: the Belfast Jet.

This year, Scorpion decided to update its line of equipment with new retro helmets Belfast Evo and Belfast Evo Carbon.

In appearance, the Evo versions are of course very close to the previous versions, as it is a round pendant in a very classic style. But inside the Ultra-TCT fiberglass shell, things have changed as the helmet now complies with the ECE R22-06 standard.

The Belfast Evo features a hypoallergenic, removable and washable Kwikwick 2 liner, Kwikfit goggle slits, hand-stitched faux leather lining and a chin strap with micrometric buckle. There’s also a Speedview anti-fog sunscreen. The set is very light, about 1100 grams according to the manufacturer.

The Evo Carbon variant features an even lighter weight of 950 grams and the use of Kiwkwick 3 interior trim. Its price is also significantly higher.

Scorpion is offering its Belfast Evo jet from €169.90 in a single seat version and a carbon version starting at €299.90.

Selling points: JC Motos, Caparicapeles, AdvSpirit, Motovest

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