An Electron rocket launches the Baby Come Back mission from New Zealand on July 17, 2023.Rocket Lab is making steady progress on the development of its Neutron vehicle, as the company reported fourth-quarter results that saw its contract backlog soar above $1 billion.The space company reported a net loss of $50.5 million, or 10 cents per share, for the quarter. Year over year, Rocket Lab's fourth-quarter net loss widened by about 36% as the company continues to spend heavily to create its Neutron rocket. It ...