[로먼 망원경 2부] 인간이 못 보는 암흑물질, 괴물 망원경으로 기어코 찾아낸다

📢 If you're going to buy clothes anyway, buy them cheaply 🔗 https://www.musinsa.com/curator/shop/... 🔔 20% discount coupons issued from 9/22 to 10/8 (※ Limited to first-come, first-served, so they may run out early) ※ As part of the Musinsa Curator activity, a commission is provided if a purchase is made through this link. 💡 Summary The core mission of the Roman Space Telescope is not merely to clearly observe the distant universe, but to uncover the true nature of dark energy and dark matter. The universe is currently expanding, and based on existing observations, "accelerated expansion"—where the rate of expansion gradually increases—has been accepted as the mainstream theory. To explain this, the concept of dark energy, which acts to push the universe away, was introduced; however, recent studies based on some supernova observations are raising the possibility of decelerated expansion. In particular, a key point of contention in modern cosmology is whether dark energy is a ‘cosmological constant’ that does not change over time, or if it possesses changing properties. The Roman Telescope plans to measure the history of the universe's expansion with much greater precision by simultaneously observing numerous supernovae across the vast sky. Since dark matter cannot be directly observed, its existence and distribution are estimated through the gravitational effects it exerts on surrounding celestial bodies. A representative method is gravitational lensing; by measuring the extent to which a massive mass in the foreground bends the light of galaxies in the background, the amount of invisible mass can be calculated. The Roman Telescope utilizes a wide field of view to observe this gravitational lensing phenomenon on a large scale, enabling it to create a kind of ‘map’ of how dark matter is distributed in the universe. While dark matter and dark energy are concepts necessary to explain the current universe, they have not yet been directly detected or had their true nature revealed; much like the ‘epicycles’ of the geocentric model of the past, the possibility remains that they could eventually be replaced by completely different explanations. Another important goal of the Roman Telescope is the search for exoplanets. By utilizing the subtle changes in brightness caused by gravitational lensing when a star passes in front of another, the presence of planets around that star can be detected. Furthermore, thanks to the Roman Telescope's wide field of view, numerous exoplanet candidates can be searched for simultaneously. Additionally, by using a coronagraph that blocks starlight, it is possible to directly photograph some already discovered planets to investigate their properties in greater detail. The Roman Telescope also differs from existing telescopes like the Hubble and James Webb in that it is a "probe telescope" that rapidly releases observational data, allowing researchers worldwide to compete using the same data. Ultimately, the Roman Telescope is an observational instrument that simultaneously delves into the biggest questions of modern astronomy, ranging from the expansion of the universe and the structure of dark matter to Earth-like exoplanets. 📌Key Topics Is the universe really accelerating its expansion, or is there a possibility of deceleration? Is dark energy a constant "cosmological constant," or is it something that changes over time? How is a map of invisible dark matter created using gravitational lensing? How does the Roman Telescope find Earth-like exoplanets? How will astronomers around the world compete over the released Roman observation data? [This is an AI-generated summary of the video] 👉 Understanding Inquiries: [email protected] 👉 Read "Understanding Text". https://contents.premium.naver.com/ba... 👉 Join Understanding Membership @understanding.