Mars will reach its closest approach to earth of the current opposition on June 21, the summer solstice, the same day that a full solar eclipse takes place in the southern hemisphere. On June 30 Comet Linear C/2001 A2 makes its closest earth approach while breaking up. And there has been a sudden increase in sunspot activity, with the sunspot count reaching close to a record on June 18.
On June 10, the sun, which had been relatively quiet, suddenly blossomed with 250 sunspots. Today, June 18, the count is at 289 and earth is experiencing geomagnetic storm conditions with a G2-class geomagnetic storm under way. Two of the current sunspots, 9503 and 9506, have twisted beta-gamma magnetic fields that could unleash strong M-class solar flares in the next few days.