News dated
A Hubble image published by NASA on 22 October shows a gravitational lens: the mass of a foreground galaxy bends light from a more distant galaxy, producing an arc and a smaller, reversed image of it. These are two images of the same source, rather than two separate galaxies. [1]
Observations like these help prepare models and analysis tools for the Nancy Grace Roman Space Telescope, which will survey much wider areas of sky. The arrangement of the images helps researchers study the mass bending the light. This is neither a result already obtained by Roman nor a new direct detection of dark matter. [1]
The bright side
Data already collected by Hubble can help researchers prepare more effectively for a future large astronomical survey. [1]
One idea, in simple words
A galaxy is an enormous collection of stars and other material. Hubble is a telescope in space. In an image published by NASA on 22 October, a galaxy along our line of sight changes the path of light from a more distant galaxy. This effect is called gravitational lensing. We therefore see two images of the same object: a large arc and a smaller, reversed one. They are not two different galaxies. As a comparison, imagine a picture distorted by a lens, except that gravity acts here instead of glass. Scientists use these observations to prepare analyses for the future Roman telescope. The picture comes from Hubble: it does not show observations already made by Roman. [1]
A little discovery to keep
What did you discover?
Straight from the source.
- NASA’s Hubble Charts Path for Roman with Gravitational Lenses NASA · 22 Oct 2026
Original reporting summaries prepared with AI assistance and accessible sources. Our editorial method.
