Space & Astronomy• 2 min readOctober 8, 2026

NASA Builds New Test Telescope for Space Observatory Project

NASA is working with a company named L3Harris Technologies to build a new test telescope made of glass for a future space observatory. This project aims to help scientists detect ripples in space called gravitational waves.

In short: NASA is working with a company named L3Harris Technologies to build a new test telescope made of glass for a future space observatory. This project aims to help scientists detect ripples in space called gravitational waves.

Imagine trying to spot movements smaller than an atom across millions of miles of space.

What happened, in plain words

NASA moved forward with a new telescope project for the LISA mission, which stands for Laser Interferometer Space Antenna. A company called L3Harris Technologies will design and build an engineering test unit, which is a final step before making actual flight hardware. Led by the European Space Agency, the LISA mission plans to launch in the mid-2030s and will place three satellites into an orbit that follows Earth. These satellites will use infrared laser beams sent through specialized telescopes to measure tiny changes in distance between the spacecraft, revealing gravitational waves.

Key points

  • L3Harris Technologies Involvement: L3Harris Technologies will design, assemble, and integrate the new engineering test unit telescope for NASA.
  • Spacecraft Arrangement: The mission involves three satellites forming a triangular shape that stretches 1.6 million miles or 2.5 million kilometers on each side.
  • Special Glass Material: Each telescope is made entirely of an amber-colored ceramic-glass composite named Zerodur, chosen because it resists shape changes across different temperatures.
  • Historical Predictions: Gravitational waves were predicted by Albert Einstein in his 1916 general theory of relativity and first found by ground observatories in 2015.

Terms explained

  • Gravitational waves — Ripples in the fabric of space and time caused by massive accelerating objects in the universe. Example: Like ripples spreading across a pond when you toss a heavy stone into the water.
  • Infrared laser beams — Focused beams of light that carry signals and are invisible to the human eye. Example: Like the invisible beam from a television remote control that sends instructions to the screen.
  • Zerodur — A specialized ceramic-glass composite that does not easily change shape when temperatures go up or down. Example: Like a sturdy ceramic plate that stays the same size even if you heat it up or cool it down.

Why it matters

The LISA mission could help scientists better understand how the universe works, detect mergers of massive black holes, and provide new insights into gravity.

What we still don't know

The launch is planned for the mid-2030s, meaning the mission is still in development and testing stages rather than actively operating in space.


Source: NASA. The original is licensed Domínio público (EUA), exceto imagens e conteúdo de terceiros. This text is an AI-assisted adaptation (summarized, simplified and translated) and may differ from the original.