... hunt for a Planet X started in 1915 and with the discovery of objects such as Sedna, a dwarf planet as big as Pluto and more recently another Kuiper Belt object known as (KBO) 2012 VP113 detected in the inner Oort...
... 1969. On April 1, 1976, in an interview with BBC Radio 2, British astronomer Patrick Moore announced that at 9:47 am, the planet Pluto would pass directly behind Jupiter, creating a combined gravitational force and a stronger tidal pull, which would...
... minor planets called Trans-Neptunian Objects (TNOs), that have been mystifying scientists for many years. Pluto, perhaps the most famous TNO, was the first one to be discovered in 1930 – since then, almost two...
...), with shout-outs to the Kepler Space Observatory, the Curiosity Mars rover, the New Horizons mission to Pluto, Juno, and the James Webb Space Telescope (plus NSF's ground-based Atacama Large Millimeter Array...
..., their orbits can extend well beyond 100 AU. Other large bodies classed as trans-Neptunian objects include Pluto and its icy moon Hydra, Makemake, Haumea and Sedna. The present set of minor planets available...
... first person to realise this and indeed the International Astronomical Union – the same organisation that demoted Pluto to dwarf planet status – voted to rename Hubble’s law as the Hubble–Lemaître law, in honour of Belgian priest...