News Now | United kingdom – yahoo
Last September, a group of scientists announced the discovery of phosphine gas in the atmosphere of Venus, and said that it could be related to life on this planet.
In a new follow-up to this discovery, these researchers indicated that the level of phosphine was 7 times less than the level they initially reported. In the original paper of the study published in the journal Nature Astronomy, the researchers claimed to have found high traces of phosphine that is produced on Earth either by organisms that do not require oxygen to survive, or that can be created in laboratories.
In re-analyzing the data, which has not been reviewed by experts, the study authors now say that there may be less phosphine than was initially reported, but this does not completely exclude the discovery of phosphine. Also, the researchers also said that they are discovering differences in phosphine over time.
So does this mean that there is no chance of life in the clouds of Venus?
In response to this question, Jane Graves, lead author of both studies and a professor at Cardiff University in the United Kingdom, said: “No, never. The discovery of change over time is particularly exciting, as other things change over time such as the amount of water that appears in the clouds.” .
And Venus is the closest planet. Its structure is similar Earth But it is slightly smaller than it and it is the second planet from the sun and the earth is the third.
Venus is surrounded by a thick, poisonous atmosphere that traps heat. Surface temperatures reach 880 degrees Fahrenheit (471 degrees Celsius), which is enough to melt lead.
Over the past few decades, some astronomers have assumed that life could exist in a narrow region of clouds, between 48 and 60 kilometers above the surface, and this is where phosphine was discovered, which is why the results of the study were very exciting for some.
The existence of extraterrestrial life has been a major scientific issue for a long time. Scientists have used probes and telescopes to search for “vital signs” – indirect signs of life – on other planets and moons in our solar system and beyond.
Venus was not the focus of the search for life in the solar system, as Mars and other worlds received more attention.
On Earth, phosphine is produced by microorganisms in “anaerobic” environments that do not depend on oxygen. These environments include sewage plants, swamps, rice fields, lake sediments, excrement, and intestinal canals for many animals. Phosphine is also produced in a non-biological form in some industrial settings.
Watch a black hole swallow a sun the size of a star
This extremely rare event, which occurs once every 10 – 100,000 years, is called “tidal disturbances”.