Two habitable planets that could support life discovered

Agencies
June 19, 2019

Two exoplanets that have been discovered, which are warm similar to Earth and may have water, could be alternatives to support life, according to a study on Tuesday.

Scientists have been searching for planets close to nearby stars since 2016 using a 3.5-meter telescope.

Images captured at the Calar Alto Observatory in Almeria, southern Spain, and two other Spanish telescopes allowed researchers to analyse, in great detail, the Teegarden star—a cold red dwarf only around 12.5 light years away from our solar system, Efe news reported.

"Teegarden only has eight per cent of our sun's mass," said Ignasi Ribas, co-author of the study. "It is much smaller and much less brighter than the Sun. In fact, despite being very close to the Earth it was not discovered until 2003," Ribas said.

The temperature of the star is around 2,600C (the Sun's temperature is 5,500C) and because it is 10 times smaller, it's 1,500 times weaker and radiates mostly infrared waves.

Once the star was found, scientists used the Doppler technique, also known as the wobble method, which uses radial-velocity measurements of the parent star to detect planets around it.

The Doppler technique detected at least two signals, which have now been identified as planets Teegarden b and Teegarden c.

Teegarden b has the mass similar to Earth and orbits the star every 4.9 days. The second planet takes 11.4 days to complete the orbit, which is the length of its year.

"In other words, they are much closer to their (parent) star than the Earth is to the Sun," Ribas said.

"Teegarden, the more internal one, receives 10 per cent more light than we do from the Sun, that's why we think it may be too hot and may not have water. But this is just speculation because there are elements of its climate that we don't know and that could mean there could be liquid water," he continued.

Teegarden hovers in the midst of a habitable zone, which means the temperature on its surface is between 0 degree Celsius and 100 degree Celsius, meaning it could very well have water on surface.

What scientists are excited about is that both exoplanets are excellent candidates to support life, alongside Proxima, which to date was the planet that presented the best conditions for habitability.

Experts believe between the closest star to our solar system -- Proxima Centauri that is four light years away, and Teegarden (the 24th furthest away at 12 light years) -- there are dozens of stars, some with planets orbiting them, but "apart from Proxima, none of them present ideal conditions (for life)," Ribas said.

Researchers have not ruled out the possibility of there being more planets orbiting Teegarden, but the system would have to be observed in more detail. "These planets are of great interest in order to search for life in the mid-term," Ribas said.

Without doubt, for the scientist, the forthcoming decade will be thrilling and key in space exploration and the search for suitable terrestrial exoplanets.

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News Network
October 29,2024

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At least 60 people, including children, have been killed in Israeli strikes on several areas in Lebanon’s eastern Bekaa Valley, the Lebanese Health Ministry says.

The ministry said at least 58 people were also wounded in the attacks on 12 areas in the Bekaa Valley on Monday.

Of the 60 killed, at least 16 deaths were recorded in al-Alaq, west of Baalbek city, the ministry added.

The casualty figures were preliminary and are expected to rise as rescue efforts were still ongoing, according to to the ministry.

Baalbek governor Bachir Khodr denounced the attacks on the area as the "most violent" since the start of the Israeli aggression.

Israel has been targeting Lebanon since October 2023, when it launched a genocidal war on the Gaza Strip.

Hezbollah has been responding to the aggression with numerous retaliatory operations, including one with a hypersonic ballistic missile, targeting the occupied Palestinian territories.

Since late September, Israel has escalated its strikes against Hezbollah, killing its leader Sayyed Hassan Nasrallah and a number of its senior figures.

At least 2,710 people have been killed by Israeli fire, and 12,592 others wounded since the clashes began last year, the health ministry says.

The Lebanese resistance movement has vowed to keep up its operations against Israel as long as the Israeli regime continues its Gaza war, which has so far killed at least 43,020 Palestinians, mostly women and children.

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News Network
October 27,2024

Samajwadi Party (SP) chief Akhilesh Yadav stated on Sunday, October 27, that his party is prepared to contest the Maharashtra Assembly elections independently if the Maha Vikas Aghadi (MVA) does not include them in the alliance. 

Yadav assured that the SP would only contest in constituencies where it has a strong organizational presence and would ensure its participation does not affect the MVA’s overall prospects.

Several I.N.D.I.A. alliance members have expressed dissatisfaction with the Congress over seat-sharing arrangements in upcoming state polls. 

Both the CPI(ML)L and the RJD voiced frustration after being offered only 3-4 seats each for the Jharkhand elections by the Congress.

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