Astronomie

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an image of the star forming region in space, with stars all around it and blue sky
an image of many different objects in the night sky with stars and planets all around them
Hubble Ultra Deep Field image that contains hundreds of galaxies.
a wooden stool covered in black mud
Joy of Mirror Making: Polishing
an image of a planetary object in the sky with stars around it and a bright blue ball at the center
The Bubble Nebula. Credit: Bernard Michaud
an image of some very pretty looking stars in the sky with blue and red colors
Nebulosas
a spiral galaxy with stars in the background
Euclid’s view of spiral galaxy IC 342
Over its lifetime, our dark Universe detective will image billions of galaxies, revealing the hidden influence that dark matter and dark energy have on them. That’s why it’s fitting that one of the first galaxies that Euclid observed is nicknamed the ‘Hidden Galaxy’. This galaxy, also known as IC 342 or Caldwell 5, is difficult to observe because it lies behind the busy disc of our Milky Way, and so dust, gas and stars obscure our view.
two spiral galaxy like objects in the dark sky
The Hubble Space Telescope show us how all is relative
This image is a really interesting example of how challenging it can be to tell whether two galaxies are actually close together, or just seem to be from our perspective here on Earth. A quick glance at this image would likely lead you to think that NGC 1356, LEDA 467699 and LEDA 95415 were all close companions, whilst IC 1947 was more remote. However, we have to remember that two-dimensional images such as this one only give an indication of angular separation: that is, how objects are spread across the sphere of the night sky. What they cannot represent is the distance objects are from Earth.
an open wooden box with some metal parts in it
Construction d'un télescope Dobson de 350
a round mirror sitting on top of a newspaper
How I make Telescope Mirror Blanks
an image of a star cluster in the sky
APOD: 2024 April 25 - NGC 604: Giant Stellar Nursery
APOD: 2024 April 25 - NGC 604: Giant Stellar Nursery
an image of some very pretty stars in the sky with red and blue lights on them
Space
an image of some very pretty looking stars in the sky with many different colors and shapes
an image of a planetary object in the sky