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Gravitational Lensing

This wide field shows the extended stellar halo of NGC 6505 and showcases the Einstein ring, surrounded by colourful foreground stars and background galaxies.

Europe’s New Space Telescope Finds Perfect ‘Ring of Light’ Predicted by Einstein

Categories Physics & Mathematics, Space, Technology

The massive, yet invisible halo of dark matter of a galaxy cluster works as a "macrolens,", while lone, unbound stars drifting through the cluster act as additional "microlenses, multiplying the factor of magnification.

Webb Telescope Discovers Over 40 Ancient Stars in Distant “Dragon Arc” Galaxy

Categories Space

The galaxy cluster MACS-J0417.5-1154 is so massive that it bends the fabric of space-time. This causes the appearance of galaxies behind it to be distorted, an effect known as gravitational lensing. This natural phenomenon magnifies distant galaxies and can also make them appear in an image multiple times, as NASA's James Webb Space Telescope has observed. In this image, two distant, interacting galaxies - a face-on spiral and a dusty red galaxy seen from the side - appear multiple times, tracing a familiar shape across the sky. The fact that these galaxies are actively forming stars and that the face-on galaxy's spiral shape is remarkably intact indicates that their interaction is just beginning.

Webb Telescope Unveils Rare Cosmic ‘Question Mark’ in Distant Galaxy

Categories Physics & Mathematics, Space

The cosmic microwave background — the universe’s oldest light — has traversed vast distances before reaching us. During its extended journey, gravitational forces from massive cosmic structures caused its trajectory to bend before being captured by the South Pole Telescope.

Results from South Pole Telescope’s new camera emerge

Categories Space

Astronomers capture radio signal from distant galaxy

Categories Physics & Mathematics, Space

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