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NASA has discovered the most Earth-like planets yet

NASA has discovered the most Earth-like planets yet 86

NASA’s Kepler mission has discovered a trio of distant planets that look remarkably like our own. Belonging to solar systems located 1,200 and 2,700 light years from Earth, the three Earth-sized worlds have been spotted orbiting in the so-called Goldilocks Zone of their parent stars – the “just-right” range at which liquid water, and life, can exist on a planet’s surface.
NASA’s Kepler mission has been hunting for worlds beyond our solar system for a little over four years now, and it’s been enormously successful. In that time, it’s spotted literally thousands of planetary candidates. Today, three distant worlds –dubbed Kepler-62f, Kepler-62e, and Kepler-69c –have achieved planetary confirmation, while joining an elite cadre of so-called habitable planets.
Kepler-62f (an artist’s depiction of which appears above) and 62e possess radii just 1.4- and 1.6-times that of Earth’s, respectively, and orbit a star some 1,200 light years away, along with three other newly discovered planets. Kepler-69c, on the other hand, has a radius 1.7-times that of Earth, and orbits a star around 2,700 light years distant from our own. Together, the three newly discovered worlds have become the second,third, and fourth known bodies to wear the badge of “Earth-like, habitable zone planet.”
Above: relative sizes of Kepler habitable zone planets discovered as of 2013 April 18. Left to right: Kepler-22b (with a radius 2.4-times that of our home planet), and the newly discovered Kepler-69c, Kepler-62e, Kepler-62f. All of these, with the exception of Earth, on the far right, are artists’ renditions. Credit: NASA/Ames/JPL-Caltech
Judging from their radius and orbital period, Kepler researchers are calling 62e and 62f two of the most similar objects to Earth yet. Their discovery is recounted in an article published in the latest issue of Science.
“Kepler-62e probably has a very cloudy sky and is warm and humid all the way to the polar regions,” said co-author Dimitar Sasselov in a statement. “Kepler-62f would be cooler, but still potentially life-friendly.”
The pair belong to a five-planet system that includes 62d, 62c and 62b. These latter three planets vary in size, but orbit far too close to the system’s parent star to have any chance of harboring water or life.
“There may be life [on 62f and 62e], but could it be technology-based like ours? Life on these worlds would be under water with no easy access to metals, to electricity, or fire for metallurgy,” said lead author Lisa Kaltenegger in a statement.
“Nonetheless, these worlds will still be beautiful blue planets circling an orange star — and maybe life’s inventiveness to get to a technology stage will surprise us.”
What 62e, and 62f have going for them, apart from their placement in the habitable zone, is their size. It is thought that smaller planets tend to be more rocky, and less gaseous, than larger worlds. However, the star they orbit is smaller and older than our own. It’s cooler, and only about 20% as bright. Kepler-69c, on the other hand, an artist’s concept of which appears here, orbits a star about 93% as big, and 80% as luminous as our own, making it the smallest world yet discovered in the habitable zone of a sunlike star.
Its neighbor, Kepler-69b is just over twice the size of Earth and orbits once every 13 days. With an orbit that tight, Kepler scientists it’s way too hot to support either water or life.
“The Kepler spacecraft has certainly turned out to be a rock star of science,” said John Grunsfeld, associate administrator of the Science Mission Directorate at NASA.
“The discovery of these rocky planets in the habitable zone brings us a bit closer to finding a place like home. It is only a matter of time before we know if the galaxy is home to a multitude of planets like Earth, or if we are a rarity.”
The Kepler-62 findings are pubished in the latest issue of Science. Those on Kepler-69 have been accepted for publication in The Astrophysical Journal.

Space

In December, Earth’s inhabitants will be able to see a rare cosmic phenomenon

In December, Earth's inhabitants will be able to see a rare cosmic phenomenon 99

At the end of the year, astronomers expect to see a rare cosmic phenomenon dubbed the “Christmas star” in the sky. It will be caused by the fact that Saturn and Jupiter come close to each other at a minimum distance and almost collide to become one super-bright point of light.

These two planets became one straight line in the solar system a few weeks ago, but at the end of December they will be on it for observers from Earth. This will happen on December 21, 2020, on the day of the winter solstice, when the daylight hours are the shortest and the night is the longest. Jupiter and Saturn will look like a “double planet” for the first time since the Middle Ages, Forbes writes.

“The conjunctions of the two planets are extremely rare, but this particular conjunction is especially rare because the planets will be very close to each other,” Patrick Hartigan, astronomer at Rice University, USA said. “In order to observe a closer conjunction of these planets in the night sky, we would have to return on March 4, 1226.”

It is noted that the unusual celestial phenomenon can be observed from anywhere on the planet. The main thing is that the sky is clear. The “Christmas Star” can be seen in the western sky about an hour after sunset when viewed from the northern hemisphere.

“On the evening of their closest approach, December 21, they will appear as a twin planet, separated by less than 1/5 the diameter of the full moon,” Hartigan said. “For most amateur astronomers looking at the night sky through a telescope, both planets and several of their largest satellites will be in the same field of view this evening.”

In December, Earth's inhabitants will be able to see a rare cosmic phenomenon 100

Those who want to see Jupiter and Saturn converge in the sky as close, but will be higher above the horizon, will have to wait until March 15, 2080, Hartigan said. After that, a similar configuration for this planetary pair will not be observed until 2400.

Astronomers are already preparing equipment to analyze in detail the upcoming event. Everything is very serious, because the second such rapprochement between Jupiter and Saturn cannot be expected.

Of course, there will not be a collision of planets. You just get the impression that something terrible is about to happen in the solar system. Astronomers have assured that there is no reason to worry.

Is the “Christmas Star” an omen of things to come? Mark your calendars! 

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Space

A giant asteroid worth $ 17.4 billion is approaching Earth

A giant asteroid worth $ 17.4 billion is approaching Earth 101

NASA announced the imminent flight of a potentially dangerous asteroid will pass the Earth. The website of the Center for the Study of Near-Earth Objects says that a celestial body ranging in size from 370 to 820 meters will approach the planet on November 29.

The asteroid, consisting of nickel, iron and cobalt, is approaching the Earth. The cost of minerals in its composition reaches $ 17.4 billion, with reference to the Asterank database, which contains data on 600 thousand asteroids.

The distance between the asteroid 153201 (2000 WO107) and the Earth will be more than 4 million kilometers, the Space Reference specified with reference to NASA data. It is noted that the distance from the Earth to the Moon is 10 times less, and the asteroid is considered dangerous because it crosses the orbit of our planet.

According to the NASA Center for the Study of Near-Earth Objects, the celestial body will approach the Earth on November 29. 

It is noted that this time the asteroid does not pose a threat to the planet, however, it belongs to the group of potentially dangerous ones, since its trajectory crosses the Earth’s orbit.

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Space

Intrusive buzzing. The Perseverance rover recorded the space sounds of its flight to Mars

Intrusive buzzing. The Perseverance rover recorded the space sounds of its flight to Mars 102

NASA’s new rover is equipped with a microphone to record sounds during landing on the Red Planet.

NASA’s Perseverance rover, which is en route to Mars, has recorded its flight to the planet.

The new rover is equipped with a microphone designed to record sound when entering the atmosphere, descent and landing. The device should arrive on the Red Planet in February 2021.

But before the rover reached its destination, NASA’s Jet Propulsion Laboratory (JPL) released an audio file recording what the rover “hears” during its interplanetary voyage.

The 60-second recording, posted on SoundCloud, was captured on Oct.19 while checking the rover’s EDL and microphone system.

Experts explain that the buzzing sound comes from a pump that pumps fluid to regulate the rover’s temperature.

NASA compares the new hit for your playlist to the noise you hear on wired headphones when the wire rubs against your clothing. It was these mechanical vibrations that the Perseverance microphone picked up.

“Located at the rear of the starboard side of the Perseverance, the pump is part of the unit’s heat system that maintains operating temperatures for the equipment, even in the coldest locations,” JPL said in a statement.

“I apologize to the person who came up with the slogan for the film” Alien “(” No one in space will hear your scream “- ed.), Perhaps no one will hear the scream, but perhaps a pump to remove heat will be heard,” says a leading engineer at JPL Dave Gruel.

He added that the microphone picks up the hum of the pump through mechanical vibration.

The Perseverance rover is supposed to land on Mars on February 18, 2021 in the Jezero crater – it is believed that a riverbed used to pass through this area. This is one of those places where traces of living organisms on the planet could be preserved.

The main mission of the rover is to detect signs of life in order to advance the study of the ancient history of Mars. In addition, the device will become part of a mission to deliver samples from the surface of the red planet: it will dig out rock at certain points, and then another device will pick them up, which will send them to Earth.

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