Indeed space dust is a problem. From notes in the parent article - "[3] Observations of the centre of the Milky Way must be made at longer wavelengths (in this

Indeed space dust is a problem. From notes in the parent article - "[3] Observations of the centre of the Milky Way must be made at longer wavelengths (in this case infrared) as the clouds of dust between the Earth and the central region strongly absorb visible light." This interstellar dust was recently revealed to be a fine mist of grease, soot and silicates - https://academic.oup.com/mnras/article/479/4/4336/5039660 https://academic.oup.com/mnras/article/479/4/4336/5039660