Skip to content
  • For Scientists arrow_outward
NSF Logo Icon
NRAO Logo
  • News
  • Gallery
  • Telescopes
    • VLA
    • ALMA
    • VLBA
    • GBT
    • ngVLA
  • Tech
    • CDL
    • Spectrum Management
    • ngRADAR
    • VLASS
  • Visit Us
    • Visit VLA
    • Visit ALMA
    • Visit GBO
  • Learn
    • What is Radio Astronomy?
    • Black Holes
    • Exoplanets
    • Pulsars Astronomy
    • Eclipse Basics
    • Blogs
    • Outreach Programs & Events
  • Explore
    • Cosmic Coloring Compositor
    • Interferometry Explained
    • NRAO Mission Control
  • Join & Give

Cosmology

Select : AsteroidsBlack HolesCareers in AstronomyCelestial EventsCometsConstellationsCosmic DistancesCosmic Microwave BackgroundCosmologyExoplanetsGalaxiesGravity WavesHoaxesMoonPhysicsPlanetsRadio AstronomyScientific MethodSETISolar SystemSpace ProbesStarsSunTelescopesUnexplained Celestial Observations

Top Achievements for the NRAO Very Large Array

Question:  I’m embarrassed to ask this, as I feel after working here for so long I should already know…

Dark Energy, Universal Expansion, and Peculiar Galaxy Motions

Question:  I have been hearing lately in some space documentaries that black energy, which makes the universe expand and…

Will Dark Energy Tear Apart Black Holes?

Question:  Will dark energy eventually tear apart black holes, especially supermassive black holes?  — Reinaldo Answer:  Let’s start with…

What is the Difference Between the Redness of an Object and its Redshift?

Question:  What is the difference between Doppler shift of light and Natural light spectra (blue for young and red…

How Did the First Galaxies Form?

Question:  From where did this initial cloud of gases and dust come? In other words, how did the cloud…

Time Dilation and the Speed of Light

Question:  T or F: Since gravitational time dilation has been confirmed to exist. The speed of light cannot be…

Posts navigation

  • « Previous
  • 1
  • …
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • Next »

Connect with NRAO

mail
Tweets by TheNRAO
The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
The U.S. National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."
AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.
  • News
  • Gallery
  • Telescopes
    • VLA
    • ALMA
    • VLBA
    • GBT
    • ngVLA
  • Tech
    • CDL
    • Spectrum Management
    • ngRADAR
    • VLASS
  • Visit Us
    • Visit VLA
    • Visit ALMA
    • Visit GBO
  • Learn
    • What is Radio Astronomy?
    • Black Holes
    • Exoplanets
    • Pulsars Astronomy
    • Eclipse Basics
    • Blogs
    • Outreach Programs & Events
  • Explore
    • Cosmic Coloring Compositor
    • Interferometry Explained
    • NRAO Mission Control
  • Join & Give
  • For Scientists
  • About NRAO
  • Ask an Astronomer
  • Historical Archives
  • Media Use
  • Social Media Policy
  • NRAO Library
  • Central Development Lab
  • Technology Transfer
  • Employee Services
  • Visitor Code of Conduct
  • Careers

Contact Us

NRAO Headquarters
520 Edgemont Road
Charlottesville, VA 22903
434-296-0211
More Information Here

© 2025 The National Radio Astronomy Observatory