Scientists have revealed the taste of comets, so what exactly does comet smell like?

The comet that the Philae lander will land on is "67P Churyumov Grashimenk", here referred to as 67P C-G. According to the current plan, Philae will carry out a landing operation on 12 November. But the smell there, if you can smell it, is probably unpleasant to you.

Scientists have described it as a mixture of some kind of rotten egg, horse urine, alcohol, and bitter almond flavors.

Since August of this year, the Rosetta Ion and Neutral Particle Analyzer (ROSINA) on board the Rosetta spacecraft has been using its two mass spectrometers to sniff out the "odor" of comet 67p C-G.

Kathrin Altwegg, chief scientist at the Rosina device, said: "The smell of Comet 67P C-G is very strong, mixed with rotten eggs (hydrogen sulfide), horse urine (ammonia), and that spicy, suffocating smell of formaldehyde. In addition to these, there is also the smell of dizzying, bitter almond hydrocyanic acid.

And that's not all, you have to add some alcohol flavor (methanol), and sulfur dioxide, which is like vinegar, and finally add the unique aromatic flavor of carbon disulfide. Okay, now you can probably feel the smell of the comet. ”<

The results of a detailed analysis of the gas composition of Comet 67p c-g, as well as the observation of whether there will be some changes in this composition as the comet moves closer to the Sun, will help scientists determine the composition of the comet. <>

Further work will also clarify the differences between Comet 67p C-G and other comets, such as those originating from the Kuiper Belt, such as this 67p C-G comet, and comets originating from the more distant Oort clouds, such as the Sedin Springs Comet that passed Mars some time ago. The ultimate goal, the researchers say, is to reveal the fundamental chemical composition of the solar nebula, from which the entire solar system and even our life itself were born.

I think it's the smell of earth, because there are no living things.

A mixture of some rotten egg, horse urine, alcohol, and bitter almond flavors.

Maybe there's a smell on the comet, but no one smells it.

I guess it might be the smell of earth, because there is a lot of earth.

I can't say for sure, it depends on the research of scientists.

Because there is no taste, the universe is vacuum.

I don't think there's any smell and can't smell it.

It is not an easy task to know the smell of a comet, and it costs billions of dollars. However, this has already been done by ESA.

At 7:17 a.m. on 2 March 2004, ESA launched the Rosetta probe into space using the Aryan V launch vehicle V-158 (also known as the Ariane-5 launch vehicle), and the Philae lander that landed on the comet was a major component of Rosetta.

Comet Rosetta probe.

After stepping into space, Rosetta embarked on a 10-year journey to chase stars.

Finally, in the early morning of November 13, 2014, the Philae lander released by Rosetta landed smoothly on the 67P Churyumov-Grashymenk comet and carried out a series of exploration missions.

Comet 67p Churyumov-Grashimenk.

The data that scientists have analyzed from the results of the probe's detection, summing up the taste of the comet, is really incredible.

What does it smell like on a comet?

It is a synthesis of several flavors, and one taste alone is not enough to describe it. "Horse pee", "rotten eggs", "almonds", "acetate", "pungent" and a faint scent, but this fragrance can be ignored, because as far as the other smells are concerned, they can already stun people.

The smell of horse urine is brought by ammonia; The pungent smell is caused by formaldehyde; The smell of rotten eggs is brought about by hydrogen sulfide; The bitter taste of the almond flavor is brought about by hydrogen cyanide; The acetic acid smell is due to sulfur dioxide, as well as a slight aroma from carbon disulfide.

Philae lander.

That's the smell of comets, and if you walk into a room filled with these smells, I think you'll just hold your breath, because just one of the rotten eggs is enough to choke people, don't you say?

So, the air on Earth smells good, and it's a nightmare on a comet!

This article** comes from the Internet, invaded and deleted.

I am used to smelling the air on the earth, and the comet smells like horse urine, fishy, why do you say that, I heard that the environment on this comet is very bad, and the smell is very bad.

The composition of the earth's air is made of oxygen, gas, carbon dioxide and some rare gases, we are used to it, such a taste is absolutely colorless and odorless, but the gas on the mood is very strange, the smell of cow urine, the smell of rotten eggs.

The smell on the comet is very stinky, and there is even a smell of horse urine. I believe that people can't live in such an environment for a moment, and the smell will definitely be suffocating.

The flavor on the comet is a combination of several flavors, like "horse urine", "rotten egg", "almond", "acetate", "pungent" and a faint scent.

The smell on the comet is not good, and it may be much more stinky than we thought. There is a smell of stinking gutters, maybe there is a smell of corpses, so you can't smell it for a few more minutes in such an environment.

Rotten eggs, horse urine, alcohol, bitter almonds, can you imagine the taste of mixing these things together? If there's a way to bring comets to you, they'll probably smell like this.

The European Space Agency (ESA) announced on October 24 that its scientists had obtained some interesting chemical information about the gas of Comet 67P Churyumov Gerasimenko (67P C-G), including molecules such as ammonia, methane, hydrogen sulfide, hydrogen cyanide and formaldehyde, through detectors on the comet Rosetta probe, although they did not taste very pleasant. ESA scientists posted on their blog: "When you smell a comet, you will regret it very much.

The information obtained from the comet was obtained by a mass spectrometer called Rosina-DFMS on the Doudi Rosetta, which analyzes the characteristics of the comet's gas as it approaches the Sun.

Carson Altwig, the chief scientist in charge of the mass spectrometer, said that the smell of comet 67P C-G is quite strong, including the smell of rotten eggs from hydrogen sulfide, the smell of horse urine produced by ammonia, the pungent smell of formaldehyde, the bitter taste of hydrogen cyanide like almonds, and the smell of alcohol volatilized by formaldehyde. In addition to this, add a little sweet aroma of carbon disulfide. "This is the unique 'comet scent' you'll smell.

Altvig said.

ESA scientists say they are pleasantly surprised by the detection of so many different molecules at this stage.

Launched in March 2004, the Rosetta comet probe finally caught up with its fast-moving target: Comet 67p C-G on August 6 this year, after 10 years, 5 months and 4 days of spaceflight with a total length of more than 6.4 billion kilometers. During the flight, Rosetta passed by Earth three times, Mars once and two other asteroids.

As the first spacecraft to orbit a comet in close proximity, Rosetta will accompany Comet 67p C-G to approach the Sun for more than a year. On November 12, Rosetta will begin a high-risk in-orbit maneuver and release a lander on the comet, which, if successful, will be the feat of the first human landing on a comet. Scientists believe that comets, travelers of the solar system, are like time capsules, containing primordial material left over from the formative days of the solar system.

Total lap points. Ten years ago, "Rosetta" made up her mind to run to the comet "Goddess"; Ten years later, "Xiao Luo", who came to the "goddess", received an affectionate first kiss as he wished, although the "tone" was very strong! Since the first artificial satellite was launched in 1957, more than 100 probes have been sent to the cosmological family, and multi-level "visits" have greatly enriched human cognition and greatly improved the scientific and technological level in the fields of long-range communication, power supply, and materials. It is certain that more "messengers" will go to deep space one after another, but no matter how far they go and who they meet, the original intention of mankind has never left the ultimate philosophical question of "we come from".

A comet is a celestial body that enters the solar system and orbits the sun in brightness and shape depending on the solar distance. The comet is divided into three parts: the nucleus, the hair, and the tail. The comet nucleus is made up of icy material, and as the comet approaches the star, the comet material sublimates and loses, forming a hazy comet and a thin fluid of material around the ice nucleus.

Due to the pressure of the solar wind, the tail of the comet always points away from the direction of the sun to form a very long tail of the comet. The tail of a comet is generally tens of millions of kilometers long, and the longest can be hundreds of millions of kilometers. Comets are shaped like brooms, so they are commonly known as broom stars.

The orbits of comets are mostly parabolic or hyperbola, and a few are elliptical. More than 1,600 comets orbiting the Sun have been discovered. The famous Halley's Comet orbits the Sun for 76 years.

On February 21, 2014, a team of researchers from Kyoto Sangyo University in Japan discovered the presence of ammonia on a comet. [1] According to the latest reports, scientists have recently discovered some chemical residues belonging to the comet "67P Chulyumov-Grashimenk" on board the comet's Rosetta spacecraft.

Scientists used detectors to analyze these chemicals and found that the main components were ammonia, methane, hydrogen sulfide, hydrogen cyanide and formaldehyde. From this, scientists concluded that the comet's odor smelled like a combination of rotten eggs, horse urine, alcohol, and bitter almonds [2].