Latest news with #TOI-1846
See - Sada Elbalad
3 days ago
- Science
- See - Sada Elbalad
NASA Discovers Mysterious 'Super-Earth' Planet Sending Repeated Signals
Rana Atef NASA has announced the discovery of a mysterious planet similar to a "super-Earth," known as TOI-1846 b, which is emitting repeated signals from a distance of 154 light-years away. The agency explained that the planet is twice the size of Earth and has four times its mass. It orbits a small, cool red dwarf star in a tight orbit, taking only about four days to complete a revolution. This tight orbit causes a strange, repeated dimming of the star's light. NASA noted that both space-based and ground-based telescopes have identified the planet as belonging to a rare category known as the "radius gap". This group falls between small rocky planets like Earth and larger gas-rich planets like Neptune. Despite the planet's surface temperature being estimated at around 600°F (316°C), scientists do not rule out the presence of water. NASA also stated that TOI-1846 b orbits much closer to its star than Mercury does to the Sun in our own solar system. The host star is about 40% the size and mass of the Sun. NASA scientists hope to use the James Webb Space Telescope (JWST) to study the planet's atmosphere using infrared technology. The goal is to search for signs of water vapor, methane, carbon dioxide, or other gases. read more Gold prices rise, 21 Karat at EGP 3685 NATO's Role in Israeli-Palestinian Conflict US Expresses 'Strong Opposition' to New Turkish Military Operation in Syria Shoukry Meets Director-General of FAO Lavrov: confrontation bet. nuclear powers must be avoided News Iran Summons French Ambassador over Foreign Minister Remarks News Aboul Gheit Condemns Israeli Escalation in West Bank News Greek PM: Athens Plays Key Role in Improving Energy Security in Region News One Person Injured in Explosion at Ukrainian Embassy in Madrid News Israeli-Linked Hadassah Clinic in Moscow Treats Wounded Iranian IRGC Fighters News China Launches Largest Ever Aircraft Carrier Sports Former Al Zamalek Player Ibrahim Shika Passes away after Long Battle with Cancer Videos & Features Tragedy Overshadows MC Alger Championship Celebration: One Fan Dead, 11 Injured After Stadium Fall Lifestyle Get to Know 2025 Eid Al Adha Prayer Times in Egypt News "Tensions Escalate: Iran Probes Allegations of Indian Tech Collaboration with Israeli Intelligence" Arts & Culture South Korean Actress Kang Seo-ha Dies at 31 after Cancer Battle News Flights suspended at Port Sudan Airport after Drone Attacks Arts & Culture Hawass Foundation Launches 1st Course to Teach Ancient Egyptian Language Videos & Features Video: Trending Lifestyle TikToker Valeria Márquez Shot Dead during Live Stream
Metro
4 days ago
- Science
- Metro
'Super-Earth' sending out strange signal over 145 light years discovered
Scientists have discovered a 'super-Earth' awash with oceans on one side and baked on the other after it flashed a repeated signal. The exoplanet, TOI-1846 b, is almost two times larger and four times heavier than Earth, and a year is only four Earth days. TOI-1846 b is 154 light years away – to put that into perspective, it would take a car driving at 60mph about 2billion years to get there. The alien world orbits a dim, reddish ball of gas called a red dwarf star in the northern constellation Lyra. Scientists discovered it after tracing back a flickering light recorded by NASA's Transiting Exoplanet Survey Satellite in March. By pointing both space and ground-based telescopes up at the signal, researchers realised it was a planet blotting out a few hundredths of a percent of the light of its star as it orbited past. The team wrote in a recently published paper TOI-1846 b falls into the so-called 'radius gap' – not quite a rocky planet, not quite a gas giant. TOI-1846 b probably has a layer of dense ice underneath and is awash in oceans of water, topped by a thin atmosphere. It would be about 295°C on the planet's surface, as only one side of it is ever facing its sun. Abderahmane Soubkiou, lead researcher at Oukaimeden Observatory in Morocco, said: 'We have validated TOI-1846 b using TESS and multicolour ground-based photometric data, high-resolution imaging, and spectroscopic observations.' But while that sounds like a lot, more tests and observations are needed to figure out the planet's atmosphere and composition. There's only a slim chance that life could be wriggling around the planet's oceans given the blistering temperatures. But its host star, TOI-1846, makes the chances of this not too bad elsewhere. Compared to our Sun, the 7.2billion years old TOI-1846 is tiny – just 0.4 times the size of our neighbourhood star and is only TOI-1846. Red dwarfs are the most common type of star and, as they're cooler, their habitable zones are far closer to them. This means planetary systems that fall in these zones are far easier to spot. For now, scientists will keep looking at the star to see if any other planets are drifting around it – ones further out could more safely have water. To determine if aliens are calling any planets around TOI-1846 home, for example, scientists will now need to conduct radial velocity (RV) observations, looking at how the planet and its star wobble. This method, called transit timing, has been used to confirm more than 630 exoplanets so far across 7,600 transit events witnessed by TESS. Astronomers had long suspected that other planets like the ones whizzing around our Sun exist, but struggled to spot them. Now they have confirmed nearly 5,300, according to the Open Exoplanet Catalog. Get in touch with our news team by emailing us at webnews@ For more stories like this, check our news page. MORE: Two black holes just smashed together into something 225 times the mass of our Sun MORE: A mysterious, ancient '12-mile wide interstellar visitor' is racing towards us MORE: The Simpsons predict the future – again – after scientists plan artificial solar eclipse
Time of India
06-07-2025
- Science
- Time of India
Scientists find second Earth hidden near red dwarf, could this water world reshape our future
Live Events (You can now subscribe to our (You can now subscribe to our Economic Times WhatsApp channel Astronomers have discovered a new exoplanet nearly twice the size of Earth that may be rich in water, according to a study published on the arXiv preprint server. The planet, named TOI-1846 b , is located approximately 154 light-years from Earth and orbits a red dwarf star The discovery was led by Abderahmane Soubkiou and his team at the Oukaimeden Observatory in Morocco. The planet was detected using data from NASA 's Transiting Exoplanet Survey Satellite (TESS) and confirmed through ground-based photometry, high-resolution imaging, and spectroscopy.'We have validated TOI-1846 b using TESS and multicolor ground-based photometric data, high-resolution imaging, and spectroscopic observations,' the authors wrote, as reported by to the study, TOI-1846 b has a radius of approximately 1.792 times that of Earth and is about 4.4 times more massive. The planet completes one orbit around its host star every 3.93 days, suggesting it lies extremely close to the star. Its equilibrium temperature is estimated at 568.1 Kelvin (approximately 295°C).Researchers believe the planet likely has a water-rich composition, based on its size and density. However, they emphasized the need for further observations to confirm this. In particular, radial velocity (RV) measurements using instruments like MAROON-X could help determine its mass and internal structure more study also notes that the planet has a Transmission Spectroscopy Metric (TSM) of 47, which is below the benchmark value of 90 typically used for small sub-Neptune planets. This means that while its atmosphere may be more difficult to study, it remains a target of interest for future host star, TOI-1846, is a red dwarf with a mass of about 0.42 times that of the Sun and a radius of approximately 0.4 solar radii. It has an estimated age of 7.2 billion years and an effective temperature of 3,568 discovery adds to a growing list of super-Earths identified by astronomers in recent years. Earlier in 2025, researchers discovered another super-Earth, HD 20794 d, located just 20 light-years from Earth. That planet is about six times Earth's mass and lies within the habitable zone of its star, although its elliptical orbit may affect its potential to support b is not considered habitable due to its high temperature and close orbit, but its age and possible water-rich nature make it a valuable object for studying the formation and evolution of rocky exoplanets.
NDTV
05-07-2025
- Science
- NDTV
Astronomers Discover "Water-Rich Super-Earth" Twice As Big As Our Planet
Scientists have discovered a new "super-Earth" that is located about 154 light-years away and is nearly twice as big and four times as massive as our planet. According to a paper published on the arXiv preprint server, the team of astronomers, led by Abderahmane Soubkiou of the Oukaimeden Observatory in Morocco, discovered the exoplanet using NASA's Transiting Exoplanet Survey Satellite (TESS). They stated the newly discovered alien world, designated TOI-1846 b, is likely a water-rich super-Earth and is estimated to be 7.2 billion years old. "We have validated TOI-1846 b using TESS and multicolour ground-based photometric data, high-resolution imaging, and spectroscopic observations," the researchers wrote in the paper, as per According to the study, the exoplanet has a radius of about 1.792 Earth radii and is about 4.4 times more massive than our planet. It orbits its host every 3.93 days, and the equilibrium temperature of the planet is estimated to be 568.1 K. Based on their research, scientists concluded that the new "super-Earth" is likely water-rich. But they noted that radial velocity (RV) observations of TOI-1846 b should be conducted in order to unveil its composition. "These findings make TOI-1846 b well-suited for mass determination via RV observations. This could be possible with the MAROON-X instrument. (...) We find a TSM [transmission spectroscopy metric] of 47 for TOI-1846 b, which is below the 90 benchmark for small sub-Neptunes," the authors of the paper wrote, according to the outlet. When it comes to the parent star TOI-1846, the researchers said that the exoplanet is about 0.4 times the size of the Sun, and its mass is approximately 0.42 solar masses. The star has an effective temperature of 3,568 K and is estimated to be 7.2 billion years old, study authors said. Meanwhile, earlier this year, researchers discovered another "super-Earth" located outside our solar system. The exoplanet, designated HD 20794 d, is six times the mass of Earth and could harbour liquid water on its surface. Located 20 light-years away, it orbits within the habitable zone of a star similar to our sun, according to findings from the University of Oxford. However, unlike Earth's circular orbit, HD 20794 d follows an elliptical path, making it uncertain whether the planet could support life, researchers said.
