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

The Colonization of Land02:22

The Colonization of Land

38.2K
Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they produced oxygen. Eventually, oxygen saturated the oceans and entered the air, resulting in an increase in atmospheric oxygen concentration, known as the oxygen revolution approximately 2.3 billion years ago. Therefore, organisms that could use oxygen for cellular respiration had an advantage. More than 1.5 years ago, eukaryotic cells and...
38.2K
Diversity of Archaea II01:24

Diversity of Archaea II

589
Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
589
Overview of Archaea01:29

Overview of Archaea

1.2K
Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...
1.2K
Impact: Problem Solving01:26

Impact: Problem Solving

488
In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
488
Conditions on Early Earth02:06

Conditions on Early Earth

102.4K
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
102.4K
Surface Appendages of Archaea01:23

Surface Appendages of Archaea

763
Archaeal surface appendages are highly specialized structures essential for environmental adaptation, encompassing roles in adhesion, biofilm formation, and motility. Among these appendages, pili and archaella stand out for their distinct morphologies and functionalities, enabling archaea to thrive in diverse and often extreme environments.Pili: Adhesion and Biofilm FormationPili are filamentous structures assembled from pilin protein subunits, primarily contributing to adhesion and biofilm...
763

You might also read

Related Articles

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

Sort by
Same author

The Lucy flyby of (52246) Donaldjohanson: A bilobed asteroid with tumbling rotation.

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

Guideline for secondary use of health records within Norwegian and EU regulatory frameworks.

NPJ digital medicine·2026
Same author

Pelvic pain and generalized persistent pain in people with mayer-rokitansky-küster-hauser syndrome: a cross-sectional survey study.

European journal of obstetrics, gynecology, and reproductive biology·2026
Same author

Effects of Altitude Descent: Hemodilution in Young Cyclists.

International journal of sports medicine·2026
Same author

Ripple mapping demonstrates putative signals identifying the right inferior nodal extension to the lower nodal bundle during AVNRT.

Heart rhythm·2026
Same author

Exo-Geoscience Perspectives Beyond Habitability.

Space science reviews·2026

Related Experiment Video

Updated: Mar 1, 2026

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

11.0K

The Philae lander mission and science overview.

Hermann Boehnhardt1, Jean-Pierre Bibring2, Istvan Apathy3

  • 1Max Planck Institute for Solar System Research, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany boehnhardt@mps.mpg.de.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|May 31, 2017
PubMed
Summary

The Philae lander achieved the first comet landing and experiments, revealing surface properties and composition. This provided unique insights into comet formation and evolution.

Keywords:
67P/Churyumov–GerasimenkoPhilaeRosettacometary science

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

4.0K
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

5.4K

Related Experiment Videos

Last Updated: Mar 1, 2026

Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

11.0K
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

4.0K
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

5.4K

Area of Science:

  • Cometary Science
  • Space Exploration
  • Planetary Science

Background:

  • The Rosetta mission's Philae lander performed the first soft landing on a comet.
  • The mission aimed to conduct scientific experiments on the comet's surface.

Purpose of the Study:

  • To analyze the morphological, thermal, mechanical, and electrical properties of the comet's surface.
  • To characterize the local environment of the landing and touch-down sites.
  • To gain insights into cometary material, nucleus interior, and comet formation/evolution.

Main Methods:

  • Utilized data from eight of Philae's ten onboard instruments.
  • Collected data during the 63-hour descent and initial surface operations (November 12-14, 2014).
  • Analyzed surface composition and physical properties.

Main Results:

  • Philae's instruments provided data on surface morphology, thermal/mechanical/electrical properties, and composition.
  • Characterized the local environment at the landing and touch-down sites.
  • Enabled unique conclusions on cometary organics, nucleus interior, and evolution.

Conclusions:

  • The Philae lander's experiments yielded significant data on comet surface properties and composition.
  • Measurements contributed to understanding comet formation and evolution within the Rosetta mission context.
  • The mission provided a first characterization of a comet's surface environment from a lander's perspective.