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If I let the gravitational potential energy at an infinite distance be zero Joules, then: Yes, the gravitational potential energy in this way would always be negative.
Right after the Big Bang, gravitational waves may have built on each other to create huge standing waves of gravitational energy.
Supermassive black hum: Scientists discover gravitational wave background that permeates universe The source could be merging black holes — or something more 'mind-bending' ...
A massive clump of dark matter in the Perseus galaxy cluster is linked to its core by a bridge of dark matter, evidence of a history of mergers.
A century after Albert Einstein predicted their existence, gravitational waves have finally been detected, tiny ripples in the fabric of space-time that were generated when two massive black holes ...
Energy forms - CCEA Higher tier: Gravitational potential energy Energy cannot be created or destroyed but it can be transferred, dissipated or stored in different ways.
In National 5 Physics investigate the conservation of energy law; examine how gravitational potential and kinetic energy relate when items fall from height.
The latest LIGO signal proves that gravitational waves travel at the speed of light, ruling out a swath of cosmological theories in the process.
In 1999, however, the newly discovered cosmic acceleration made it clear that some form of anti-gravitational energy (perhaps similar to Einstein's cosmological constant) had to exist.