TOI 700 d – Exoplanet from constellation Dorado

TOI 700 d - Exoplanet from constellation DoradoTOI 700 d - Exoplanet in planetary systemTOI 700 d - Dorado constellation mapDorado constellation

TOI 700 d – Exoplanet from constellation Dorado

TOI 700 d – In early 2020, astronomers managed to discover a planet about the size of the Earth. They discovered it thanks to the Transiting Exoplanet Survey Satellit (TESS) – NASA’s space telescope. Designed to search for extrasolar planets by transit. The planet TOI 700 d, located relatively close to our solar system, orbits its own star. It is located approximately 100 light-years from Earth.


 
An Earth-sized planet lies within the habitable zone of its parent star. That is, circulating at such a distance from it that there are suitable conditions for maintaining the presence of liquid water on the surface. This, in turn, gives rise to presumptions about the existence of life there. TOI700 is a small, cool M dwarf with a mass of 30% of the mass of the Sun. Three planets orbit a star within the constellation Dorado.

Several similar planets were found in the TRAPPIST-1 system, named after the TRAPPIST telescope in Chile. Another was discovered thanks to the Spitzer Space Telescope.

TOI-700 is approximately 20% larger than Earth. The year on it lasts 37 earthly days. It receives 86% of the energy supplied by the Sun to Earth from the star. The exact conditions on it are unknown. But with the information gathered, the scientists prepared 20 models of potential environments. Able to reign on TOI-700. Some of these models suggest that the planet may be livable and colonized in the future.

Sunspots registry – Program run since 1826

Sunspots registry - Solar rotationSunspots registry - Largest Sunspot of the Solar Cycle - NASASunspots registry - Sunspots - TaiwanSunspots registry - Surface of the Sun - HMI-NASASunspots registry - Monster Sunspot AR1476 - NASA

 

Sunspots registry - X-flares - X1.4 and X1.9 - NASA, SDOSunspots registry - Big Sunspot 1520 - Releases X1.4 flare - NASASunspots registry - Sunspot 1112Sunspots sunset - Xihu, HangzhouSunspots

 

Sunspot butterfly - graphPeriodic changes of Sunspot numbersSunspot diagramChanges in total solar irradiance and monthly sunspot numbers - 1975-2013Samuel Heinrich Schwabe Astronomer - Plaque in Dessau

Sunspots registry – Program run since 1826

Sunspots registry – The longest regular scientific research in the world is the record of the number of spots on the Sun created since 1826.
The research program was initiated by the German amateur astronomer Samuel Heinrich Schwabe. He watched the Sun regularly for 17 years because he wanted to observe a planet previously unknown to science called the Volcano.
Moving against the backdrop of the solar disk. Of course, he found nothing – only Mercury and Venus are between Earth and the Sun. Known since antiquity – but his observations have determined that the activity of our nearest star changes regularly.
Schwabe’s achievements inspired Rudolf Wolf, head of the Bern observatory. Which from 1848 continued to record spots and collected historical data on this subject. Dating back to the early 17th century

Spot counting system developed by Wolf.

Accepted astronomers around the world. Almost 100 observatories are currently observing this phenomenon. Both professionals and amateurs.

Carousel for stars – At the heart of Milky Way

Carousel for stars - Sagittarius A*Carousel for stars - Sagittarius A* - Light bulbCarousel for stars - Orbits of stars around the black hole at the centre of the Milky WayCarousel for stars - Supermassive black hole - Sagittarius A* - At the center of our Galaxy

 

Carousel for stars – At the heart of Milky Way

Carousel for stars – At the heart of the Milky Way. Among the hundreds of thousands of stars, there is Sagittarius A*. Around this supermassive black hole, matter circulates at a speed of 360 million km / h. However, this process takes place in the Sagittarius A* event horizon. So in the border area of space-time. This prevents observation of spinning stars.

KEPLER-442b – Stony exoplanet in superearth class

KEPLER-442bKEPLER-442b - Comparison of exoplanets from the Kepler system to EarthKEPLER-442b

KEPLER-442b – Stony exoplanet in superearth class

KEPLER-442b – Stony exoplanet in superearth class, which the parent star is the orange dwarf.

ESI: 0,84
Size: 1,3 Earth
Mass: 2,3 Earth
Equivalent temperature: -65°C

The planet KEPLER-442b, from which light has been running for 1115 years, belongs to the so-called Super-Earth. In this way, rocky exoplanets are determined whose mass does not exceed tenfolds Earth. The parent star of this planet is an orange dwarf. The star larger than a red dwarf, but smaller than a yellow dwarf, which is the Sun. This type of star has calmer youth, and therefore does not send its planetary children too much UV. In addition, the planet is in the ecosphere, so it can not be ruled out that the ocean is splashing on its rocky surface. If it has a more complex atmosphere, it does not have to be at the same time a kingdom of cold. According to some calculations, it is the smaller superearth that are most suitable for life, even more than our own planet.

GJ 273b – Exoplanet in the constellation Little Dog

GJ 273b - Artist’s impression of the exoplanet

GJ 273b – Exoplanet in the constellation Little Dog

GJ 273b – Planet orbiting the Luyten star

ESI: 0,86
Size: 1,47 Earth
Mass: 3 Earth
Equivalent temperature: -6°C

Twelve light-years from our solar system, Luyten’s star, the red dwarf, wanders from Earth in the constellation Little Dog. Astronomers have discovered two exoplanets next to it. At the same time one of them belongs to the superearth category and at the same time circulates at the edge of the ecosystem. In contrast to the many other planets whose parent star is a red dwarf, GJ273b knows what day is and what is the night. Usually, the planets move close enough that their rotation is connected, and their parent star only puts one hemisphere.

Ross-128b – 11 light years away from Earth

Ross-128b
Ross-128b

Ross-128b – 11 light years away from Earth

Ross-128b – The planetary system around the red dwarf Ross 128 for about 70,000 years will become our closest star neighbor.

ESI: 0,86
Size: 1,2 Earth
Mass: 1,3 Earth
Equivalent temperature: 7°C

Even closer than the GJ 273b is the Ross-128b exoplanet. It is away from us, just like a star. Which is a very quiet red dwarf, less than 11 light-years away and gradually approaching us. Based on the obtained data, astronomers have discovered that planet Ross 128b circulates around its star twenty times closer than Earth circulates the Sun. Despite such a short distance, the planet gets only 1.38 times more energy than our planet. Thanks to the cool and stable star, whose surface temperature in comparison with the sun is halved, the equivalent temperature on its surface is estimated to be from -60°C to 20°C.

TRAPPIST-1d – Representative of TRAPPIST-1 sys

TRAPPIST-1d - Artistic impression of exoplanetTRAPPIST-1d - Statistics tableTRAPPIST-1d - Comparison of the sizes of TRAPPIST-1 planets with Solar System bodies

TRAPPIST-1d – Representative of TRAPPIST-1 sys

TRAPPIST-1d – One of representatives of the TRAPPIST-1 planetary system

ESI: 0,91
Size: 0,8 Earth
Mass: 0,3 Earth
Equivalent temperature: 15°C

The relatively small weight of this planet indicates that its surface can be flooded by a deep ocean.
According to some speculations, here is 250 times more water than in the Earth’s oceans.
The first measurements showed that the planet is moving outside of the living zone, but now it seems that it will enter it safely. Exoplanet can boast a dense atmosphere and is so close to its star that it circulates in four days. It only drops by 4.3% more light than on Earth. Although TRAPPIST-1d circulates its star in synchronous rotation, a dense atmosphere in which there should be a lot of water vapor helps in thermal exchange. The difference between the illuminated and the dark hemisphere is not like that of other celestial bodies.

TRAPPIST-1e – Exoplanet from system TRAPPIST-1

TRAPPIST-1eTRAPPIST-1e - Planetary system orbitsTRAPPIST-1e

TRAPPIST-1e – Exoplanet from system TRAPPIST-1

TRAPPIST-1e – The stony exoplanet of the TRAPPIST-1 system, according to physical properties, is the “e” from the planetary system TRAPPIST is the most similar to Earth.

ESI: 0,85
Size: 0,9 Earth
Mass: 0,8 Earth
Equivalent temperature: -22°C

It moves in the middle of the ecosystem of the entire collection, but there is the least water here. TRAPPIST-1e has a smaller size than Earth, but it has a larger mass. Possible inhabitants would have to be smaller in height and more important to cope with the pressure of local gravity. Red dwarfs, to which the TRAPPIST-1 star belongs, do not emit as much light and heat as the Sun. This means that the ecosphere, in which liquid water can sustain in proper conditions, is located in much closer orbits than in our solar system. A year on the planet TRAPPIST-1e lasts six ordinary earth days.
The planet probably also has a compact atmosphere where hydrogen is lacking. This type of atmosphere can also be found on the rocky planets of our solar system. Hydrogen is also a greenhouse gas, if it was a large amount in the local atmosphere, the surface of the planet would be uninhabitable.

TRAPPIST-1f – Rocky exoplanet the size of Earth

TRAPPIST-1f - Artistic impression of exoplanetTRAPPIST-1f - Comparison of the data of the stony planets of the TRAPPIST-1 system with the planets of the solar systemTRAPPIST-1f - Planetary system around the red dwarf TRAPPIST-1

TRAPPIST-1f – Rocky exoplanet the size of Earth

TRAPPIST-1f – Rocky exoplanet, from the planetary system around red dwarf TRAPPIST-1

ESI: 0,68
Size: 1,1 Earth
Mass: 0,9 Earth
Equivalent temperature: -65°C

Around the star, 40 light-years away from us, are seven stony planets. The sixth in turn has very similar sizes to Earth. But its density is generally lower. The composition is close to the ice or water worlds of the moon Jupiter – Europe or the moon of Saturn – Enceladus. The first measurements determined that not a small part of the mass of the planet is ice, and that under the surface perhaps liquid water. The atmosphere here is not the densest, so the equivalent temperature probably does not differ from the proper one.

CME – Coronal mass ejection – Eruptions on the Sun

CME - Coronal mass ejection - Eruptions on the SunCME - Coronal mass ejection - Eruptions on the SunCME - Sun in X-Ray

CME – Coronal mass ejection – Eruptions on the Sun

CME – Coronal mass ejection – Every second the Sun emits around two million tons of particulate matter – or at least that’s usually the case. In the atmosphere, however, sometimes there are enormous eruptions from the corona (Coronal Mass Eruptions, CME). These types of hurricanes are among the most spectacular phenomena in our part universe . In the process, the Sun loses much more weight than usual. The speed of winds reaches even 10 million / h. CME is a cloud of gas built of electrically charged particles (physicists call it plasma gas). Plasma hurricanes can reach Earth and call the so-called geomagnetic storms that affect electronic devices, causing short circuits and equipment damage.

It is impossible to predict how dangerous it can be for satellites. The Internet and computer-controlled objects, such as nuclear power plants. The last really strong solar storm took place in the telegraph age, i.e. long before the appearance of PCs. Although astronomers are constantly observing the behavior of the Sun, they can anticipate it only slightly ahead of time. This means that in the future we will have at least 24 hours to disable all sensitive systems (even those in nuclear power plants) and secure computers. But geomagnetic storms are not the only problem facing us by the most important star …