NASA Launches Space Telescope 1,000 Times Faster Than Hubble to Unravel the Secrets of Dark Energy

Exploring Dark Matter and Dark Energy
Exoplanet Observation as a Key Mission
Field of View 100 Times Wider than Hubble
1,000 Times Faster Survey Speed
Journeying Toward L2, about 1.6 Million Kilometers Away

The National Aeronautics and Space Administration (NASA) has launched a next-generation space telescope to explore cosmic mysteries such as dark matter and dark energy. The telescope can observe the universe up to 1,000 times faster than the Hubble Space Telescope, and is expected to provide new clues for research on the causes of cosmic expansion and the search for exoplanets.

On the morning of August 30 (local time), at 7:26 a.m., NASA launched the Nancy Grace Roman Space Telescope aboard SpaceX’s Falcon Heavy rocket from Launch Pad 39A at Kennedy Space Center in Florida. The Roman Telescope is expected to travel about 1 million miles (approximately 1.6 million kilometers) over three months to enter an orbit near the Sun-Earth second Lagrange point (L2).

L2 is a point located about 1.6 million kilometers from Earth on the opposite side of the Sun, and the James Webb Space Telescope also conducts observation missions in this region. The Roman Telescope will activate its instruments during transit, perform various calibrations and performance tests for about three months, and then begin full-scale scientific observations. The first observation images are scheduled to be released early next year.

The main mission of the Roman Telescope, which was constructed with a total project cost of about 4.3 billion dollars (about 6 trillion won), is to uncover the nature of dark matter and dark energy—phenomena that cannot be observed directly by humans.

Dark matter does not emit or reflect light and thus cannot be directly observed, but it is believed to influence the motions of galaxies and stars through gravity. Dark energy is regarded as the force accelerating the expansion of the universe, but its precise nature remains unknown.

The Roman Telescope will observe countless galaxies and stars to determine how dark matter is distributed throughout the universe and to track how dark energy has influenced the process of cosmic expansion. NASA expects that, during its basic five-year mission period, the Roman Telescope will be able to observe several billion galaxies.

Christine McQueen, mission lead for the Roman Space Telescope at the Space Telescope Science Institute, told Bloomberg, "There could be something fundamentally missing in the physics as we understand it," and explained that the Roman Telescope could help measure the properties of dark energy by looking back to the early universe.

Field of View 100 Times Wider Than Hubble... 1,000 Times the Speed of Space Observation

The most prominent feature of the Roman Telescope is its wide field of view. While its primary mirror measures about 2.4 meters across—similar to the Hubble Space Telescope—it is equipped with a wide-field infrared camera, allowing it to observe an area more than 100 times larger than Hubble in a single shot. Its speed of observation is about 1,000 times faster than Hubble’s.

While the Hubble Space Telescope is optimized for examining individual celestial bodies narrowly and in depth, the Roman Telescope is specialized in rapidly surveying wide regions to determine the large-scale distribution of celestial objects. Like the James Webb Space Telescope, it primarily observes infrared light, which cannot be seen by humans.

An astronaut repairing the Hubble Space Telescope in 2009. NASA

The exploration of exoplanets is also among its key missions. The Roman Telescope is equipped with a coronagraph that blocks out the bright starlight, making it possible to observe faint surrounding planets. The mission will test technology that allows for direct imaging of exoplanets that could not be seen by previous telescopes due to the overwhelming brightness of their parent stars.

Scientists expect this will help them investigate the distribution of planets beyond the solar system and determine how many planets with Earth-like environments exist.

Named After the "Mother of Hubble" ... Two Budget Crises During the Trump Administration

The telescope is named after Nancy Grace Roman, NASA’s first chief astronomer. Roman, the agency’s first female executive, actively advocated for astronomical observations using space telescopes and contributed to the development of the Hubble Space Telescope. For this reason, she is known as "the mother of Hubble."

The development of the Roman Telescope did not proceed smoothly. During the first Trump Administration in 2018, the program—then called "WFIRST"—was slated for cancellation in the budget proposal, but funding was preserved by Congress, allowing the project to continue. The Trump Administration again excluded related funding from the initial budget proposal last year, but the final budget included the necessary project funding.

In fact, as the development finished faster than expected, NASA was able to move up the launch schedule from the originally planned May 2027, succeeding in the launch on this day. NASA stated that the mission was launched approximately nine months earlier than originally planned.

This content was produced with the assistance of AI translation services.