Nancy Grace Roman Space Telescope

NASA’s Nancy Grace Roman Space Telescope is set to begin its journey to its new home in deep space on August 30. It is NASA’s next major flagship space observatory and is designed to investigate some of the most important questions concerning the Universe, dark energy, dark matter and exoplanets.

About Nancy Grace Roman Space Telescope

The Nancy Grace Roman Space Telescope is a NASA space observatory designed to study the Universe primarily through infrared observations.

It is named after Nancy Grace Roman, a NASA astronomer who is widely regarded as one of the key figures in the development of NASA’s space astronomy programme.

The telescope will focus on three major areas of scientific research: dark energy, exoplanets and dark matter.

It will also provide an exceptionally deep and wide view of the Milky Way Galaxy, particularly its central region.

Orbit: Sun-Earth L2

The telescope will operate around the second Sun-Earth Lagrange point (L2).

L2 is a special location in space where the gravitational forces of the Sun and Earth, together with the orbital motion of a spacecraft, allow the spacecraft to remain in a relatively stable position with respect to Earth and the Sun.

This location is particularly useful for space observatories because it provides a suitable environment for long-duration observations while keeping the spacecraft relatively aligned with Earth and the Sun.

Major Scientific Objectives

The Roman Space Telescope will monitor hundreds of millions of stars to detect small changes in their brightness that can reveal the presence of planets.

Its observations will help scientists study dark energy, which is associated with the accelerating expansion of the Universe, and improve our understanding of dark matter.

The telescope will also search for distant stars, small icy objects in the outer Solar System and isolated black holes.

Its observations will contribute significantly to the study of exoplanets, particularly through gravitational microlensing.

Instruments of Nancy Grace Roman Space Telescope

1. Wide Field Instrument

The Wide Field Instrument (WFI) is a 300-megapixel infrared camera.

Its field of view is expected to be around 100 times larger than that of Hubble’s infrared instrument, allowing it to observe a much larger portion of the sky in considerably less observing time.

Over its mission lifetime, the instrument is expected to measure light from approximately one billion galaxies.

The WFI will also conduct a microlensing survey of the inner Milky Way and is expected to detect around 2,600 exoplanets.

2. Coronagraph Instrument

The Coronagraph Instrument is primarily a technology demonstration designed to test advanced techniques for directly studying individual nearby exoplanets.

It will perform high-contrast imaging and spectroscopy, helping scientists distinguish faint planets from the much brighter light of their parent stars.

Galactic Bulge Time-Domain Survey

The telescope will conduct the Galactic Bulge Time-Domain Survey, which will focus on the dense central region, or bulge, of the Milky Way.

By repeatedly observing this region and detecting changes in stellar brightness, scientists will be able to identify exoplanets and other transient astronomical phenomena.