Displaying results which match all of the below:
  • Are we alone

    A brief justification for SETI

  • Big Bang vs. Steady State

    BBC website with video clips discussing the evidence for the two theories

  • Black Hole

    An artists impression of a black hole, an area in space so massive, with gravity so extreme, that nothing can escape (not even light), swallowing a nearby star. Said to have been detected by Nasa's Chandra Observatory and the Hubble telescope


    Cosmic Microwave Background image from the COBE satellite. CMB is thought to originate from photons of light created just after the Big Bang and released as the Universe cooled. The wavelengths have been stretched and now shows up everywhere in the Universe a microwave radiation. Colour variations represent very small changes in temperature.


    More detailed CMB image with the signal from our Galaxy removed showing temperature fluctuations of +-200 microKelvin

  • Crab nebula

    A supernova remnant some 6,500 light years from Earth. Probably exploding in 1054 AD

  • Eagle nebula

    A region of current star formation, subject of the famous 'Pillars of Creation' photograph, some 6,500 light years away.

  • GradeGorilla - P1 Waves + Universe

    Online test for the P1 Topic

  • GradeGorilla - P2 Forces

    Online test for the P2 Topic

  • History of the Universe - Part 1

    A nice romp through the history of the Universe

  • History of the Universe - Part 2

    Second part including the life cycle of the sun

  • Horsehead nebula

    Image from the Canada-France-Hawaii telescope in Hawaii. The horsehead is just a portion of the dustcloud.

  • How the Sun will die

    Short film showing what will happen to the Earth and the impact of a red giant on the inner planets

  • Large Sun (Star)

    Stars with more than 5 times the mass of our Sun run out of fuel and form red supergiants with very hot cores, hot enough to produce Fe and Ni. Further layer will produce Si, S then O, Ne, Mg and finally Ne and He.

  • Life and death of a star

    Great visual but really needs a voiceover

  • Life cycle of a star

    High school project. Well explained

  • Life cycle of stars

    Image showing the life cycle of our Sun and more massive stars.

  • Neutron star

    Resulting from the death of massive stars 4 to 8 times the size of our Sun. A neutron star is so dense that on Earth one teaspoon would have a mass of a billion tons. Usually about 20km in diameter with a mass 1.4 times that of Earth.

  • Observing the Universe - IR

    Brief video explaining how the Herschel space telescope is using infrared radiation to look out into space. IR doesn't pass through the Earth's atmosphere so the telescope has to be outside of the atmosphere

  • Orion nebula

    Visible to the naked eye, just south of Orion's belt. 24 light years across and 1,500 light years away, it is the nearest stellar nursery to Earth with around 700 stars in all stages of formation.

  • P1 Revision Topic 3 origami

    Just a light hearted way of checking you know the Learning Outcomes

  • P1 Revision Topic 3 origami

    Light hearted way to check that you know the Learning Outcomes. Useful for warm-up sessions.

  • Red giant

    At the death of a star of similar size to our Sun, the hydrogen runs out and the star starts to collapse. The core temperature rises as helium fuses to form Carbon, Nitrogen and Oxygen and the star swells.

  • Red Supergiant c.f. our Sun

    Nasa images compiled to give an indication of the relative sizes of our planets, Sun and other bodies such as Red Giants and a Red Supergiant (Betelguese)

  • Red Supergiant c.f. our Sun 2

    Indication of size:
    Sirius is the brightest star in the sky
    Pollux, about 34 light years away was the first star to be confirmed with an extrasolar planet.
    Aldebaran is a red giant about 65 light years away.
    Betelgeuse is a red supergiant, as is Antares

  • SETI

    SETI - Search for Extra Terrestrial Intelligence

  • Supernova

    An exploding star will supernova and this can last weeks or months. The resulting explosion can trigger new star formation.The last supernova to be seen in the Milky Way was in 1604.

  • The death of stars and black holes

    ASTR 100 Honours project from the research school of astronomy and astrophysics from the Australian National University.

  • White dwarf

    A dying star, no longer undergoing fusion, with a mass similar to our Sun and a size similar to Earth. A White Dwarf will cool to a Black Dwarf.

  • Why telescopes in space ?

    Water vapour in the atmosphere absorbs infra red.
    Visible light makes it through the atmosphere but images are blurred
    The Earth's atmosphere blocks X-rays and gamma rays..