Dans med stjärnorna – CHEOPS och TESS rymdteleskop upptäcker synkroniserade planetbanor

Over the past few years, interest in astronomy has been skyrocketing – and with good reason.  Between efforts made by companies like SpaceX (SPCX ) to bring humans to Mars or the stunning discoveries made by the James Webb Space Telescope (JWST), there has been no shortage of stunning achievements to revel in.  To wit, astronomers have just announced the discovery of a sextuplet of planets engaged in a synchronized orbiting pattern and ‘precise waltz’.  This discovery, which was originally touted as an ‘unsolvable riddle’, was made possible by a joint effort involving teams at the University of Bern and the University of Geneva.

HD110067‑systemet

The sextuplets of planets exist in a system dubbed ‘HD110067’.  What makes them so interesting is a rare harmonic resonance, where the planets follow a synchronized orbital pattern.  This intriguing arrangement was initially a puzzle, as only the orbits of the inner two planets were clear from initial TESS data. However, precise observations from CHEOPS clarified the orbits of the remaining planets, revealing a unique chain of resonances in successive pairs (3:2, 3:2, 3:2, 4:3, 4:3).

A resonance chain is expressed as a ratio based on rotations around a star given a fixed amount of time.  The antecedent/numerator refers to the number of rotations completed by the inner planet, while the consequent refers to those completed by the outer planet in the pair.  What is significant about this finding is the extent of synchronization.

“Bland de över 5000 exoplaneter som upptäckts i omloppsbana runt andra stjärnor än vår Sol är resonanser inte sällsynta, och inte heller är system med flera planeter.

Det som är extremt sällsynt är dock att hitta system där resonanserna sträcker sig över en så lång kedja av sex planeter” – Dr. Hugh Osborn, CHEOPS fellow at the University of Bern

Essentially, the ratios found (3:2, 3:2, 3:2, 4:3, 4:3) indicate that each of the following will occur in the exact same amount of time.

• 3 varv av planet ett = 2 varv av planet två
• 3 varv av planet två = 2 varv av planet tre
• 3 varv av planet tre = 2 varv av planet fyra
• 4 varv av planet fyra = 3 varv av planet fem
• 4 varv av planet fem = 3 varv av planet sex

As a result, this discovery has now marked HD110067 as a key system for future studies, as the bright nature of the star should facilitate detailed investigations into the planets’ atmospheres and compositions, potentially uncovering whether they are gas- or water-rich.  Astronomers have noted that these findings hold significant promise for future explorations, particularly with instruments like the James Webb Space Telescope, in understanding the nature of exoplanetary systems.

Utnyttja transitmétoden med teleskop

The aforementioned discovery was made possible primarily through the use of what is called the “transit method” – a widely used technique for discovering exoplanets, which are planets outside our solar system.  This method involves monitoring the brightness of stars over time to detect periodic dimming, which indicates a planet might be passing in front of the star, blocking a small fraction of its light.

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Here’s a more detailed explanation:

Observation av stjärnljus: In the transit method, astronomers observe the light emitted by a star over an extended period.  Using space telescopes like Kepler, TESS, or ground-based telescopes, they continuously monitor the brightness of thousands of stars.

Transitevenemang: When a planet orbits a star, there’s a chance it will pass directly between the star and the observer.  This event is known as a “transit.”  When this happens, the planet blocks a tiny portion of the star’s light, causing a small but noticeable dip in its brightness.

Regelbundna förmörkningsmönster: If a star’s light dims at regular intervals, it suggests that a planet is orbiting the star and repeatedly transiting across it.  The amount of light that the planet blocks can tell astronomers about the size of the planet.  Larger planets block more light, causing a more significant dip in brightness.

Omloppstid och avstånd: The frequency of the transit (how often the light dims) gives information about the planet’s orbital period, which is how long it takes to complete one orbit around its star.  This, in turn, helps in estimating the distance of the planet from its star.

Orienteringsspecifik: The transit method only works if the planet’s orbit is edge-on, as seen from our vantage point.  If the orbit is tilted such that the planet never passes in front of the star from our perspective, the transit method won’t detect it.

Fördel i storleks- och atmosfärstudier: The transit method is particularly effective for determining the size of the planet.  Additionally, when combined with spectroscopy, it can provide information about the composition of a planet’s atmosphere.

Uppföljande observationer: After a potential exoplanet is detected through the transit method, further observations and analysis are often conducted to confirm its existence and study its properties in more detail.

To date, the transit method has been highly successful in the exoplanet hunt, contributing to the discovery of thousands of exoplanets since the early 2000s.  It’s particularly effective for finding planets that are close to their stars, such as those in the habitable zone where conditions might be right for liquid water — a key ingredient for life as we know it.

Rymdteleskop

While it may be the James Webb Space Telescope that has captivated the public’s attention since its launch, it is by no means the only such device in use by astronomers today.  In fact, the discovery of these synchronized plants was made by the following.

CHEOPS (Karakteriserande exoplanet‑satellit):

Launched in 2019, CHEOPS is operated by the European Space Agency (ESA), with contributions from several European countries.  It was designed to observe known exoplanets orbiting bright stars.  Its primary goal is to measure the sizes of these planets with high precision.  By determining the planet sizes and combining this information with existing data on the planets’ masses, scientists can calculate their densities and hence infer their compositions.

*Bild endast för illustrativa ändamål*

More specifically, CHEOPS focuses on exoplanets ranging from Earth-sized to Neptune-sized.  It aims to provide more detailed information about these worlds, many of which were discovered by other missions like the Kepler telescope.  This is done through the use of the previously described ‘transit method’, where it measures the dip in starlight as a planet passes in front of its host star.

TESS (Transiting Exoplanet Survey Satellite):

Launched in 2018, TESS is operated by the United States-based National Aeronautics and Space Administration – better known as NASA.  While CHEOPS is meant to observe known exoplanets, TESS is tasked with a main objective to discover them by monitoring the brightest stars in the sky.  It’s particularly focused on finding Earth-sized and super-Earth-sized planets.

To achieve its goal, TESS surveys the entire sky, dividing it into numerous sectors, with each being observed for about a month.  This comprehensive survey approach has allowed TESS to discover thousands of new exoplanets.  Like CHEOPS, TESS also uses the transit method to detect exoplanets.  Its all-sky survey approach helps identify planets around a wide variety of star types, including those that are nearest and brightest and, therefore, easier for follow-up studies.

Both telescopes are significant contributors to the field of exoplanet research.  While CHEOPS is more focused on studying known exoplanets in greater detail, TESS is designed to find new exoplanets and add to the rapidly growing catalog of these distant worlds.  Their findings not only help us understand the properties of exoplanets but also contribute to the broader quest of searching for potentially habitable worlds beyond our solar system.

Branschspelare

Humans are explorers by nature.  Over time, we have continually sought out, and adapted to living in all but the most extreme environments around the world.  Looking forward, if humans are to continue satiating an innate desire to expand our horizons, it will be advancements in science and the Aerospace sector.  With that in mind, the following are a few of the many companies working towards such a future.

*Uppgifterna nedan var korrekta vid skrivandet och kan komma att förändras. Eventuella investerare bör verifiera siffrorna*

Publikt noterade

1. Northrop Grumman Corporation

NOC Prisdiagram

Northrop Grumman Corporation (NOC ), ett ledande globalt säkerhetsföretag, spelar en avgörande roll i att driva fram rymdfärder och utforskning.  Kända för sin innovation inom rymdteknik har Northrop Grumman varit avgörande i flera högprofilerade rymduppdrag.  En viktig höjdpunkt i deras rymdengagemang är deras betydande bidrag till James Webb Space Telescope, vilket visar på deras expertis i att utveckla komplexa rymdsystem.

Företagets engagemang i rymden sträcker sig till tillverkning av satelliter, bidrag till International Space Station, och utveckling av startfordon.  Med starkt fokus på nästa generations teknologier och en robust portfölj i försvar och rymd är Northrop Grumman fortsatt en nyckelspelare i att forma framtiden för rymdfärder, vilket gör dem till ett attraktivt alternativ för investerare som ser mot de expanderande gränserna inom rymd och försvar.

2. Lockheed Martin Corporation

LMT Prisdiagram

Lockheed Martin Corporation (LMT ) är en jätte inom rymd- och försvarssektorn och bidrar i stor utsträckning till rymdforskning.  Som en stor leverantör till NASA sträcker sig Lockheed Martins expertis över design och byggande av avancerade rymdfarkoster och satelliter.  Särskilt har de varit integrerade i projekt som Orion Multi-Purpose Crew Vehicle, avsett att möjliggöra mänsklig utforskning av djup rymd.  Företagets engagemang i satellitteknik, rymdsonder och deltagande i Mars‑utforskningsuppdrag, inklusive Mars‑rovererna, understryker deras avgörande roll i att driva vår förståelse av rymden.

Lockheed Martins fortsatta investering i rymdteknik, inklusive initiativ inom missilförsvar och rymdforskning, positionerar dem som ett lockande val för investerare som är intresserade av den växande rymdindustrin.  Detta framåtblickande tillvägagångssätt ligger i linje med den globala drivkraften mot nya gränser i rymden, vilket gör Lockheed Martin till en nyckelspelare både inom nationell försvar och framtida rymdforskning.

3. Boeing Company

BA Prisdiagram

Boeing har en lång historia inom rymdsektorn och är en nyckelbidragsgivare till många rymduppdrag och initiativ.  Företaget har varit involverat i projekt som sträcker sig från satellitproduktion till utveckling av rymdfarkoster.  Speciellt är Boeing en stor partner i International Space Station (ISS)-programmet och har utvecklat CST-100 Starliner‑farkosten, avsedd att transportera besättning till ISS och andra potentiella destinationer i låg jordbana.

Boeings engagemang i rymdforskning är en betydande del av deras omfattande portfölj inom rymd och försvar, vilket gör dem till en framträdande aktör i branschen.

Privat ägd

SpaceX

SpaceX, led by visionary entrepreneur Elon Musk, stands at the forefront of the private space exploration industry.  Although not publicly traded, SpaceX has garnered significant attention from investors and the space community alike for its groundbreaking achievements.

The company has revolutionized space travel with its reusable rocket technology, significantly reducing the cost of access to space.  Its Falcon rockets and Dragon spacecraft have become central to both cargo and crew missions to the International Space Station.  Additionally, SpaceX’s ambitious Starlink project aims to provide global internet coverage via a constellation of satellites, showcasing its innovative approach to space-based services.  The company is also leading the charge towards Mars colonization with its development of the Starship spacecraft.

SpaceX’s continued advancements and disruptive approach in the space sector make it a company of great interest for potential future investors and a key player in shaping the future of space exploration and travel.

Blue Origin

Slutgiltiga tankar

While discoveries like the one discussed here may seem far removed from everyday life, each and every one like it increases our understanding of the Universe.  This understanding is then applied to endeavors already underway by companies such as those highlighted – whether it be a mission to Mars or mining astroids for precious metals.