Home · Science · Oct 28 archive
NASA Unveils Habitable Worlds Observatory Mission to Search for Life
· Confirmed
In Short: NASA has unveiled plans for the Habitable Worlds Observatory (HWO), a mission dedicated to searching for signs of life on planets beyond our solar system.
NASA has unveiled plans for the Habitable Worlds Observatory (HWO), a mission dedicated to searching for signs of life on planets beyond our solar system. The observatory will be positioned at a gravitationally stable orbit approximately 1.5 million kilometers from Earth, where it will observe exoplanets for several hours at a time, collecting thousands of photons reflected by gases in their atmospheres.
The mission, which is NASA’s top priority large mission as identified in the 2020 Decadal Survey on Astronomy and Astrophysics, has an estimated budget of $11 billion. It aims to directly image at least 25 Earth-like worlds and detect key chemical fingerprints such as oxygen, water, carbon dioxide, and methane, which could indicate potentially habitable conditions.
To achieve this, HWO will use a coronagraph that suppresses starlight by a factor of 10 billion, a significant technological advancement from current capabilities. The telescope will also feature a High Resolution Imager (HRI) that provides grism spectroscopy, sub-microarcsecond astrometry, and fine guidance, wavefront sensing, and pupil imaging.
NASA engineers are collaborating with industry partners, including BAE Systems, Lockheed Martin, and Northrop Grumman, to develop the necessary technologies. The mission is slated for launch in the 2040s and represents a major technological leap forward in space exploration.
Nicola Fox, head of NASA’s Science Mission Directorate, emphasized the importance of ensuring that the technology is ready before the mission begins. “A lot of it is making sure that the technology is ready to go, so before you actually start sprinting with a mission, you’ve actually assured that you can do the mission,” she said.
Evgenya Shkolnik, a professor of astrophysics at Arizona State University and co-chair of the HWO Community Science and Instrument Team, highlighted the mission’s significance. “This is our first chance to directly search for life because we live in a time where technologically we think we know how,” she said.
The mission’s ambitious goals include not only observing but directly imaging Earth-like exoplanets, marking a significant step forward in the search for extraterrestrial life. The Nancy Grace Roman Space Telescope, which launched in August 2023, will pave the way for HWO by scanning a sampling of the nearly 5,000 alien worlds discovered around other stars.
NASA’s approach to developing flagship missions is also evolving to accommodate the technological challenges of HWO. The agency is reimagining its approach to mission development, including forming and coordinating groups to advance the concept maturity of HWO.
Breann Sitarski, deputy principal architect for HWO at NASA’s Goddard Space Flight Center, noted the mission’s ambitious nature. “‘Are we alone?’ is the most ambitious question that has really ever been addressed by any mission, and an observatory capable of addressing this question must also be ambitious and powerful,” she said.
Background
NASA has unveiled plans for the Habitable Worlds Observatory (HWO), a mission dedicated to searching for signs of life on planets beyond our solar system.
NASA has unveiled plans for the Habitable Worlds Observatory (HWO), a mission dedicated to searching for signs of life on planets beyond our solar system.
What's confirmed
- HWO (pronounced “who” and called Hab Worlds for short) is NASA’s first-ever mission dedicated to searching for signs of life on planets beyond the solar system.
- Finally, mission planners also want to build in the capability for robotic craft to service the telescope all the way out at L2 — a far cry from the basic servicing possible today in the geostationary-geosynchronous realm 35,000 km above Earth.
- Astronomers identified HWO as their community’s top-priority large mission in the 2020 Decadal Survey on Astronomy and Astrophysics, with a budget estimate of $11 billion.
- [astro-ph.IM] The Habitable Worlds Observatory (HWO) will be NASA’s next flagship astrophysics mission, designed to search for signs of life on planets around nearby stars and conduct transformational science across astrophysics.
- Its High Resolution Imager (HRI) is not only the observatory’s main imaging camera, but also provides grism spectroscopy and sub-microarcsecond astrometry, as well as the observatory’s fine guidance, wavefront sensing and pupil imaging.
- We present a design concept for HRI, developed during concurrent design sessions by flowing down science requirements within the envelope of NASA’s EAC-1 telescope architecture.
- With the emergence of Starship, New Glenn, and SLS rockets, NASA engineers are reimagining what is possible for future space telescopes and our search for life in the universe.
- Preliminary design discussions have commenced, and in May, NASA awarded BAE Systems, Lockheed Martin, and Northrop Grumman contracts worth a combined $17.5M to advance key stabilizing tech.
- The goal is for HWO to directly image at least 25 of these types of worlds.
- NASA is developing plans for the Habitable Worlds Observatory, a next-generation space telescope designed to search for Earth-like planets and possible signs of life beyond the solar system, according to Universe Today.
- NASA is working with researchers across the astronomy community to determine which capabilities would deliver the greatest scientific return.
- Supporters argued the project had brought industries together behind a single planetary mission.
What's still developing
- Lee Feinberg, a NASA HWO lead and principal architect, told Payload he and his team are in communication with representatives from all three super heavy-lift launchers, having recently visited SpaceX to track Starship’s progress.
- NASA and Northrop told Payload that the preliminary Habitable Worlds team is considering building the telescope with a 6- to 8-meter mirror. (For comparison, JWST has a 6.5-meter mirror.) The bigger, the better: The bigger the telescope, the finer the details, said NASA’s Feinberg.
- Finding an Earth-like world beyond the solar system is the Holy Grail of exoplanet research, and the field has experienced incredible technological advancements in searching for and identifying exoplanets since the first exoplanet was discovered in 1995.
- The observatory’s primary mission features the Wide Field Instrument, a 300-megapixel infrared camera with a field of view 100 times larger than the Hubble Space Telescope’s, collecting data 1,000 times faster.
- “No other space observatory has this capability.” Savransky plans to attend the telescope’s launch from Kennedy Space Center aboard a SpaceX Falcon Heavy rocket, along with three doctoral students who have supported the work: Isabela Huckabee, Saanika Choudhary and Rifah Tasnim.
- “We’re going to try to do this for the very first time from a space observatory, and it’s going to teach us a lot about building the next generation,” Savransky said.
- But after years of planning, he hopes Roman – named for NASA’s first chief astronomer – begins revealing exoplanets by early next year, and imparting lessons that could inform the proposed Habitable Worlds Observatory.
- To further develop and mature today’s limited versions of these technologies to meet HWO’s stringent requirements, NASA in January awarded three-year, fixed-price contracts to seven companies.
- A special Announcement of Opportunity (AO) is soliciting the participation of the European community in the role of ESA-appointed representatives to the NASA Great Observatory Maturation Program’s (GOMAP) Science, Technology, Architecture Review Team (START) for the Habitable Worlds Observatory (HWO) mission.
- The 2020 National Academy of Sciences Decadal Survey on Astronomy and Astrophysics (Astro2020) recommended a "Great Observatories Mission and Technology Maturation Program" as its highest priority in Enabling Programs for Space.
- In response to these recommendations, NASA has established the Great Observatory Maturation Program (GOMAP).
- As part of GOMAP, NASA will form and coordinate a series of groups whose collective activities will perform and document analyses that advance HWO's concept maturity.