Sculptor Dwarf Galaxy size and scale context

The Sculptor Dwarf Galaxy is a faint dwarf spheroidal satellite of the Milky Way and one of our nearest galactic neighbours. Although it lies only about 290,000 light-years away, its stars are spread so thinly that it appears as a diffuse cloud rather than a bright compact galaxy, making it a valuable nearby fossil of the early universe. Read its scale context, comparisons, and journey links on the canonical object page.

Scroll up for smaller

Scroll down for larger

Between the smallest and the largest, perspective is everything.

About

Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.

Guides turn parts of that scale into curated essays, while focused views let you explore the same range through specific groups of objects.

Editorial

Solar System Planets From Electron to Atoms Stars To Scale Birth And Death Of Stars Black Holes To Scale

Views

Planets of the Solar System Stars of the Universe Black holes Subatomic scale

Return to Earth hello@scaleofspace.org

Between the smallest and the largest, perspective is everything.

About

Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.

Guides turn parts of that scale into curated essays, while focused views let you explore the same range through specific groups of objects.

Editorial

Solar System Planets From Electron to Atoms Stars To Scale Birth And Death Of Stars Black Holes To Scale

Views

Planets of the Solar System Stars of the Universe Black holes Subatomic scale

Return to Earth hello@scaleofspace.org

Galaxies

NGC 6872

NGC 6872 is one of the largest known spiral galaxies and is caught in a strong gravitational interaction with its smaller companion IC 4970. The encounter has stretched its spiral arms into enormous tidal extensions, turning the system into one of the clearest examples of how galaxy collisions can reshape giant galaxies on truly vast scales.

Scale fact716,000 lymaximum extent

Object class: Interacting giant spiral galaxy
Host: Pavo group
Composition: Hundreds of billions of stars, gas, dust, dark matter

Galaxy clusters

Abell 1689

Abell 1689 is a massive galaxy cluster whose gravity creates some of the strongest and clearest gravitational lensing arcs ever observed. It is packed with galaxies, dark matter, and hot intracluster gas, making it one of the best-studied natural lenses for probing both the distant universe and the hidden mass inside galaxy clusters.

Scale fact~2.4 million lydiameter

Object class: Galaxy cluster
Composition: ~1,000 galaxies, hot intracluster gas, dark matter

Galaxy clusters

Pandora's Cluster

Pandora's Cluster, also known as Abell 2744, is a giant galaxy cluster shaped by a violent and complicated merger of smaller clusters. Its galaxies, superheated gas, and dark matter have been pulled apart and redistributed in different ways, making it one of the clearest natural laboratories for studying how ordinary matter and dark matter behave during colossal cosmic collisions.

Scale fact4 million lydiameter

Object class: Galaxy cluster
Composition: Several hundred galaxies, hot intracluster gas, dark matter