2024 YR4
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2024 YR4 is an asteroid with an estimated diameter of 53 to 67 metres that is classified as an Apollo-type near-Earth object. From 27 January to 20 February 2025, it had an impact rating of 3 on the T
Diagram of 2024 YR4's orbit
Europa Clipper spacecraft best 140912jpg
Trifid and Lagoon nebulae
Dimorphos
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Dimorphos is a natural satellite or moon of the near-Earth asteroid 65803 Didymos, with which it forms a binary system. The moon was discovered on 20 November 2003 by Petr Pravec in collaboration with
A trail of dust streams from Dimorphos in this Hubble Space Telescope photo taken about three months after the collision. The asteroid is surrounded by blue dots, which are boulders ranging from 1 to 6.7 metres across that were ejected by the impact.
DART spacecraft's final images of Dimorphos, (from 11.5 seconds before impact).
Webb's First Deep Field
Stacked image of Dimorphos true orientation