- Is space-time smooth or chunky. A new study looks at the fundamental nature of reality. Is space-time — the four-dimensional fabric of our universe — ultimately smooth at the tiniest of scales, or something else? https://www.space.com/space-time-smooth-chunky-quantum-gravity.html?utm_source=selligent&utm_medium=email&utm_campaign=9155&utm_content=sdc_newsletter+&utm_term=2862064&m_i=y78bxzkl4a6hhe1q3mnqgatq2vzz_era2jrnk2m3umkiylrno8a1hir4zclnsmeoadzqlbxvtqeuhzq5cuta_tow3anafrug0gun9t8yy5 3 comments space