13.5 C
Athens
Sunday, April 18, 2021

A nearby, super-Earth hot rocky exoplanet suitable for studying its atmosphere has been discovered

✚ ATHENS

OnAthens: Works by contemporary Greek artists on walls, streets and squares

A kiss from Athens, for a city with emotions. The Onassis Foundation presents the mural "The kiss" by Ilias Papailiakis in Avdi square ....

The Social Circus of Athens and online

Online opening curtain for the Social Circus of Athens The Social Circus of Athens is an initiative that uses circus techniques to promote ...

Plato Academy is highlighted - The Archaeological Museum of Athens is created

In the framework of the program agreement between the Ministry of Culture and Sports and the Municipality of Athens, the studies were unanimously approved during yesterday's meeting of the Central Archaeological Council ...

Online comics and environmental education workshops for children

Two online workshops for children are organized by the street magazine "rafts" and the "Earth Organization" as part of the educational activities of Sport For Athens. Workshop ...

The educational workshops of INNOVATHENS for April

A rich educational program with workshops that focus on modern entrepreneurship and the latest developments in areas such as digital marketing, branding and ...

European astronomers have discovered the hot exoplanet Gliese 486b, a super-Earth around the nearby star Gliese 486, a red dwarf smaller and colder than the Sun, just 26,3 light-years from our planet.

The rocky exoplanet, the third closest ever found, is considered ideal, according to scientists, because of its proximity to the search for atmosphere in it, although due to its high temperature, the existence of friendly conditions for the development of life is unlikely.

Researchers from the Spanish-German consortium CARMENES, led by planetary scientist Tryphon Trifonov of the German Planck Institute for Astronomy in Heidelberg, made their observations with various surface and space telescopes and The DM XIXIX The XX; XOXOO O O O-DM; in the journal Science.

"Gliese 486b cannot be habitable, at least not in the way we know it here on Earth. "It is not hot enough to be a lava world alone, but its temperature makes it suitable for studying a possible atmosphere," Trifonov said.

Gliese 486b, perhaps, has retained some of its original atmosphere and on its dry surface there may be many volcanoes and some lava rivers flowing. The exoplanet is estimated to take only a day and a half to complete its orbit around its star (this is the length of its year), at a distance of 2,5 million kilometers from it.

It is almost 30% larger than the Earth, as its radius is about 1,3 times larger, while its mass is almost three times (2,8 times larger). Its surface temperature is around 430 degrees Celsius, slightly lower than Venus, while a human on its surface would feel a gravity 70% stronger than the earth.

"If the planet were 100 degrees hotter, its entire surface would be lava. "Its atmosphere would consist of gassed rocks," said astrophysicist Jose Caballero of the Spanish Center for Astrobiology.

Over the past two and a half decades, astronomers have discovered more than 4.300 exoplanets, both rocky and non-rocky, few of which have similarities to Earth. The big challenge for "terrestrial" exoplanets is the chemical analysis of a possible atmosphere, something that is expected to be possible with NASA's James Webb Space Telescope being launched this year and the future Ultra Large EL Telescope under construction. ) in Chile.

"Studying the atmosphere of Gliese 486b" could turn it into the "Rosetta Column" of extraterrestrials, at least for Earth-like planets, "said Caballero, referring to the discovery in 1799 of an inscription that helped archaeologists translate Egyptian hieroglyphics for the first time.

"Once the James Webb telescope is up and running, we plan to observe the Gliese 486b. "We are optimistic that in about two and a half to three years we can know whether this planet has an atmosphere or not and, if so, what its composition is," Trifonov said.

SOURCE: ΑΠΕ- ΜΠΕ

"Concert on the Radio": Melodic poetry in Athens 9.84 with Christos Thivaios tonight at 21:00

"Concert on the Radio" Melodic poetry CHRISTOS THIVAIOS Vicky Karatzoglou Michalis and Pantelis Kalogerakis Athens 9. 84 focuses on the Word of Greek Song and presents with sound and image 11 radio ...

Τραγωδία σημειώθηκε, το βράδυ του Σαββάτου, στη Νέα Ερυθραία μετά από πυρκαγιά που ξέσπασε σε διώροφη μονοκατοικία. Οι άνδρες της Πυροσβεστικής ανέσυραν τη σορό ενός...

News bulletin at 22:00

Dramatic increase in the Intensive Care Units where EODY announced 837 intubated patients covid-19. In the last 24 hours, the death toll is 67, raising the number ...

Italy-coronavirus: 15.370 cases - 310 dead

Today in Italy 15.370 cases of coronavirus were recorded and 310 people lost their lives. Yesterday the cases were 15.943, with 429 deaths. In total, 331.734 took place ...

Ukraine calls for military assistance to Russia

"Europe's diplomatic support for Kiev is welcome, but it needs more than 'nice words,'" said Ukrainian Ambassador to Berlin Andriy Melnik. Seven...

The "experiment of Rhodes" and the big bet

The German-language press focuses on the efforts to open Greek tourism. Also in the press are the flights of asylum seekers to Germany and the ...

Czech Republic: Deportation of 18 Russian diplomats accused of espionage

The Czech Republic has deported 18 Russian diplomats accused of espionage. The Czech intelligence services have identified 18 members as agents of the Moscow espionage services ...

IT HAPPENS IN ATHENS

Cleaning operation of the Municipality of Athens in Ag. Georgiou

A coordinated cleaning operation of Agios Georgios square and the surrounding streets was carried out at dawn by the crews of the Municipality of Athens in order to remove the ...

OnAthens: Works by contemporary Greek artists on walls, streets and squares

A kiss from Athens, for a city with emotions. The Onassis Foundation presents the mural "The kiss" by Ilias Papailiakis in Avdi square ....

The Social Circus of Athens and online

Online opening curtain for the Social Circus of Athens The Social Circus of Athens is an initiative that uses circus techniques to promote ...

Push Buttons: The new solo exhibition of Ilias Kafouros in Two Villages Project Space

Elias Kafouros in his new solo exhibition entitled Push Buttons in Two Villages Project Space in Athens, weaves complex compositions that emerge ...

"My Athens": Student photo contest on Instagram

The educational program of the Municipality of Athens "The child, the city and the monuments" organizes a photography competition on the Instagram platform for school students ...