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

Circular Orbits and Critical Velocity for Satellites01:16

Circular Orbits and Critical Velocity for Satellites

2.9K
The Moon orbits around the Earth. In turn, the Earth (and other planets) orbit the Sun. The space directly above our atmosphere is filled with artificial satellites in orbit. One can examine the circular orbit, the simplest kind of orbit, to understand the relationship between the speed and the period of planets and satellites with respect to their positions and the bodies that they orbit.
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
2.9K
Energy of a Satellite in a Circular Orbit01:11

Energy of a Satellite in a Circular Orbit

2.3K
Thousands of artificial satellites orbit the Earth every day at various distances from the Earth. Satellites that orbit the Earth below an altitude of 1,600 km are considered to be orbiting in low-Earth orbit (LEO). Research satellites and Earth observation satellites are usually placed in LEO, and mostly orbit the Earth in elliptical orbits. Navigation satellites are placed in medium-Earth orbit (MEO), ranging from 2,000 km to 36,000 km from the surface of the Earth. Meanwhile, communication...
2.3K
Kepler's Third Law of Planetary Motion01:18

Kepler's Third Law of Planetary Motion

3.4K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
3.4K
Kepler's Second Law of Planetary Motion01:29

Kepler's Second Law of Planetary Motion

4.3K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. His first law states that all planets orbit the Sun in an elliptical orbit, with the Sun at one of the ellipse's foci. Therefore, the distance of a planet from the Sun varies throughout its revolution around the Sun.
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
4.3K
Kepler's First Law of Planetary Motion01:10

Kepler's First Law of Planetary Motion

4.1K
In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
Polish astronomer Nikolaus Copernicus put forth a theory that stated a heliocentric model for the solar system. According to this heliocentric theory, all the planets, including Earth, orbit the Sun in circular orbits.
On the other hand,...
4.1K
Schwarzschild Radius and Event Horizon01:21

Schwarzschild Radius and Event Horizon

2.1K
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...
2.1K

You might also read

Related Articles

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

Sort by
Same author

A sudden change and recovery in the magnetic environment around a repeating fast radio burst.

Science (New York, N.Y.)·2026
Same author

Detection of disk-jet coprecession in a tidal disruption event.

Science advances·2025
Same author

Starspots as the origin of ultrafast drifting radio bursts from an active M dwarf.

Science advances·2025
Same author

Quasi-periodic oscillations of GHz-band polarization in a black hole.

Nature communications·2025
Same author

Discovery of a high-velocity cloud of the Milky Way as a potential dark galaxy.

Science advances·2025
Same author

Magnetar emergence in a peculiar gamma-ray burst from a compact star merger.

National science review·2025
Same journal

Keep the Hubble and James Webb Space Telescopes alive - the science is worth the price tag.

Nature·2026
Same journal

Say hello to hard helium.

Nature·2026
Same journal

How to avoid dementia - what the science really says.

Nature·2026
Same journal

Save Hubble: the race to preserve the space telescope kicks off.

Nature·2026
Same journal

How long can humans live? All evidence points to a maximum of 125 years.

Nature·2026
Same journal

Listen to Gen Z when it comes to AI in education.

Nature·2026
See all related articles

Related Experiment Video

Updated: Jul 26, 2025

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

19.5K

A binary pulsar in a 53-minute orbit.

Z Pan1,2,3,4, J G Lu1,2,3,4, P Jiang5,6,7,8

  • 1National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People's Republic of China.

Nature
|June 20, 2023
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new spider pulsar, PSR J1953+1844 (M71E), with an unusually short orbital period and a low-mass companion. This finding helps bridge the gap between different types of pulsars and understand their evolution.

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

3.6K
3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

10.3K

Related Experiment Videos

Last Updated: Jul 26, 2025

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

19.5K
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

3.6K
3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles
11:28

3D Orbital Tracking in a Modified Two-photon Microscope: An Application to the Tracking of Intracellular Vesicles

Published on: October 1, 2014

10.3K

Area of Science:

  • * Astronomy and Astrophysics
  • * Compact object physics
  • * Binary star systems

Background:

  • * Spider pulsars are neutron stars with close companion stars, leading to millisecond rotation periods and short orbits.
  • * These systems are crucial for understanding pulsar evolution, irradiation effects, and neutron star formation.
  • * Black widow pulsars have very low-mass companions, potentially evolving from redback pulsars.

Purpose of the Study:

  • * To search for and characterize millisecond pulsars with moderate-mass companions and very short orbital periods.
  • * To investigate the evolutionary link between different types of pulsars.
  • * To report the discovery of a novel binary millisecond pulsar system.

Main Methods:

  • * Radio observations of the binary millisecond pulsar PSR J1953+1844 (M71E).
  • * Analysis of orbital period and companion star mass.
  • * X-ray source detection and localization.

Main Results:

  • * Discovery of PSR J1953+1844 (M71E), a binary millisecond pulsar.
  • * Orbital period of 53.3 minutes.
  • * Companion star mass of approximately 0.07 M☉.
  • * Located near the center of the globular cluster M71.

Conclusions:

  • * The discovered system fills a gap in the expected population of pulsars.
  • * Provides new insights into the evolution of spider pulsars and their companions.
  • * Contributes to understanding the diversity of neutron star binaries.