Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Non-inertial Frames of Reference01:27

Non-inertial Frames of Reference

6.6K
A reference frame accelerating or decelerating relative to an inertial frame is a non-inertial frame. To help understand this, consider what taking off in an airplane, turning a corner in a car, riding a merry-go-round, and the circular motion of a tropical cyclone all have in common. All these systems are accelerating, decelerating, or rotating relative to the Earth; hence, they all are non-inertial frames. All these systems exhibit inertial forces, which merely seem to arise from motion,...
6.6K
Schwarzschild Radius and Event Horizon01:21

Schwarzschild Radius and Event Horizon

2.2K
No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape...
2.2K
Detection of Black Holes01:10

Detection of Black Holes

1.7K
Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
1.7K
Space-Time Curvature and the General Theory of Relativity01:17

Space-Time Curvature and the General Theory of Relativity

4.4K
In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of...
4.4K
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

2.0K
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
2.0K
The Principle of Superposition and the Gravitational Field01:17

The Principle of Superposition and the Gravitational Field

2.3K
The principle of superposition applies to gravitational forces of objects that are sufficiently far apart. It states that the net gravitational force on a point object is the vector sum of the gravitational forces on it due to various objects. The principle helps calculate the force by listing the individual forces and then vectorially summing them up. However, it should be noted that the principle of superposition is not always apparent. In the presence of a second force, the first force could...
2.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dosimetric impact of radiofrequency tumor treating field arrays on dose on surface and at depth.

Journal of applied clinical medical physics·2026
Same author

Ethical and Clinical Boundaries in Genomics & Newborn Screening: A Brief Report from IPIC2025.

International journal of neonatal screening·2026
Same author

Bifidobacterium pseudocatenulatum capsular exopolysaccharide enhances systemic anti-tumour immunity in pre-clinical breast cancer.

Research square·2026
Same author

Microbial Food Safety Risk in Finished Soil Amendments: A Statewide Cross-Sectional Study of Organic Waste Processing Systems in California.

Journal of food protection·2026
Same author

Genomic insights into population structure and conservation of wild olive (<i>Olea europaea</i> subsp. <i>cuspidata</i>) in Oman's Dhofar and Hajar Mountains.

Frontiers in plant science·2026
Same author

Accurate and fast event-based shape measurement of mixed reflectance scenes.

Nature communications·2026

Related Experiment Video

Updated: Apr 30, 2026

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

21.4K

Dark matter maps reveal cosmic scaffolding.

Richard Massey1, Jason Rhodes, Richard Ellis

  • 1California Institute of Technology MC105-24, 1200 E. California Boulevard, Pasadena, California 91125, USA. rjm@astro.caltech.edu

Nature
|January 9, 2007
PubMed
Summary

Dark matter, invisible to light, forms a cosmic web of filaments and clusters. Gravitational lensing reveals this dark matter distribution, supporting theories of structure formation in the Universe.

More Related Videos

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

3.0K
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.7K

Related Experiment Videos

Last Updated: Apr 30, 2026

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

21.4K
Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

3.0K
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.7K

Area of Science:

  • Cosmology
  • Astrophysics
  • Particle Physics

Background:

  • Ordinary baryonic matter constitutes only one-sixth of the Universe's total mass.
  • Dark matter, a non-luminous component, interacts gravitationally but not electromagnetically.
  • Direct observation of dark matter is impossible due to its lack of light interaction.

Purpose of the Study:

  • To map the large-scale distribution of dark matter in the Universe.
  • To investigate the properties and structure of dark matter.
  • To test predictions of structure formation models.

Main Methods:

  • Utilizing gravitational lensing, the deflection of light by mass concentrations, to probe dark matter.
  • Creating high-fidelity maps of dark matter distribution, resolved in both angle and depth.
  • Analyzing the geometrical effects of light deflection, independent of astrophysical assumptions.

Main Results:

  • Revealed a large-scale dark matter distribution forming a network of filaments.
  • Observed massive dark matter structures at the locations of galaxy clusters.
  • Demonstrated that dark matter distribution evolves over time, forming a cosmic web.

Conclusions:

  • The observed dark matter distribution is consistent with gravitational structure formation predictions.
  • Dark matter collapses into filaments and then clusters, creating a gravitational scaffold.
  • This scaffold facilitates the accumulation of gas and the formation of stars.