Our galaxy may have a trillion objects more massive than Earth in unstable orbits which could pass though our Solar system 100 years from now.<br />If one of them is heading our way now at 1% of light speed, it will travel one light year in 100 years. We likely would not have detected it yet if it is one light year away. Worse, weather balloon size black holes could be 1% of a light year away without us detecting them, if they have thin acreation disks.<br /> Cold neutron stars and cold white dwarf stars likely would not be detected until 1% of a light year away, either. A near miss of Earth would change our orbit, perhaps taking us dangerously close to (or far from) the Sun. A sling shot manuver around the sun is much more likely than falling into the Sun, but few humans would survive a month of Earth being closer than Venus, to the Sun. Seveal such objects may have missed Earth, by a billion plus kilometers in the recent million years, so the odds are favorable for the coming million years, unless such objects travel in swarms = not likely. Also slower than 1% of the speed of light is more probable. Is our galaxy near the center or near the edge of our galaxtic group at present? Is God protecting Earth from such hazzards? Neil